[IELTS] Danh sách 4000 từ vựng cơ bản IELTS – Phần 1

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abandon:
n. Syn. relinquish
(từ bỏ) lacking restraint or control; feeling of extreme emotional intensity; unbounded enthusiasm

abandonment:
n.
(bỏ) giving up completely; freedom from constraint

abbreviation:
n.
(viết tắt) shortening something by omitting parts of it

abeyance:
n. Syn. suspension
(hoãn lại) suspended action; temporary cessation or suspension

abide:
v.
(tuân) endure; put up with; bear; tolerate

ability:
n. Syn. capacity; skill
(khả năng) capacity; skill

abnormal:
a. Syn. anomalous; unusual
(bất thường) unusual; not typical; not normal

aboard:
ad.
(trên tàu) on a ship, train, plane or other vehicle; in or into a group, organization, or business

abolish:
v. Syn. cancel; annul
(không nhận bãi bỏ) cancel; put an end to; destroy completely

abolition:
n.
(bãi bỏ) ending; act of abolishing; act of doing away with

abortion:
n.
(phá thai) termination of pregnancy; failure of a plan

abortive:
a. Syn. unsuccessful; fruitless
(bại) unsuccessful; failing to accomplish an intended objective; fruitless

abridge:
v. Syn. condense; shorten
(hạn chế một) condense; shorten; reduce length of written text

abrogate:
a. Syn. abolish
(Bãi bỏ) abolish, do away with, or annul, especially by authority

abrupt:
a. Syn. sudden; unforeseen
(đột ngột) broken off; very steep; having sudden transitions from one subject to another

absence:
n.
(vắng) state of being absent; state of being away

absent:
a. Syn. missing
(vắng) go away or leave ; missing; not present

absolute:
a. Syn. complete; certain
(tuyệt đối) perfect in quality or nature; complete; totally unlimited; certain

absolutely:
ad. Syn. utterly; definitely
(tuyệt đối) utterly; definitely

absorb:
v. Syn. monopolize; receive
(hấp thụ) assimilate or incorporate; suck or drink up; occupy full attention

absorption:
n. Syn. assimilation; reception
(hấp thụ) process of absorbing nutrients into the body after digestion; state of mental concentration

abstract:
a. Syn. theoretical; abstruse
(trừu tượng) theoretical; not concrete; not applied or practical; difficult to understand

absurd:
a. Syn. preposterous; ridiculous; foolish
(vô lý) preposterous; ridiculously incongruous or unreasonable; foolish

absurdity:
n.
(vô lý) quality of being absurd or inconsistent with obvious truth, reason, or sound judgment; logical contradiction

abundance:
n. Syn. profusion; richness
(phong phú) great or plentiful amount; fullness to overflowing

abundant:
a. Syn. plentiful
(phong phú) plentiful; possessing riches or resources

abuse:
n. Syn. misuse
(lạm dụng) improper use or handling; misuse

academic:
a. Syn. scholarly; collegiate; theoretical
(học) related to school; not practical or directly useful; relating to scholarly organization; based on formal education

academy:
n.
(học viện) school for special instruction; society of scholars, scientists, or artists

accede:
v. Syn. agree; assent; concede
(tham gia) agree; give consent, often at insistence of another; concede

accelerate:
v. Syn. speed; hasten
(tăng tốc) move faster; cause to develop or progress more quickly; occur sooner than expected

acceleration:
n.
(gia tốc) faster rate of improvement; rate of change of velocity with respect to time

access:
n. Syn. approach
(truy cập) approach; entry; entrance

accessible:
a. Syn. obtainable; approachable
(tiếp cận) easily approached or entered; obtainable; easy to talk to or get along with

accessory:
n. Syn. adjunct; appendage
(Phụ kiện) additional object; useful but not essential thing; subordinate or supplementary item

accident:
n.
(tai nạn) event that takes place without one’s foresight or expectation; sudden, and unexpected event

accidental:
a. Syn. unexpected; unforeseen
(ngẫu nhiên) unexpected; unforeseen

accidentally:
ad. Syn. inadvertently
(tình cờ) inadvertently; by chance; casually; fortuitously; not essentially or intrinsically

accommodate:
v. Syn. adapt; oblige
(phù hợp) do a favor or service for; provide for; supply with; make suitable; adapt; allow for

accommodation:
n.
(nhà ở) living quarters provided for public convenience; something that meets a need; convenience

accompaniment:
n.
(đệm) act of accompanying someone or something

accompany:
v.
(cùng) travel with; be associated with

accomplish:
v. Syn. finish; achieve
(thực) succeed in doing; bring to pass; achieve; reach the end of; complete

accomplishment:
n. Syn. achievement; fulfillment
(thành tựu) achievement; fulfillment

accord:
n. Syn. agreement; treaty
(phù) settlement or compromise of conflicting opinions; written agreement between two states

account:
n. Syn. report; description
(tài khoản) narrative or record of events; reason given for a particular action or event

accountant:
n.
(Kế toán) one who maintains and audits business accounts

accounting:
n.
(thực hiện kế toán) system that provides quantitative information about finances

accrue:
v.
(tích luỹ) increase, accumulate, or come about as a result of growth; accumulate over time

accumulate:
v. Syn. collect
(trách nhiệm tích lũy) pile up; collect; mount up; increase

accumulation:
n. Syn. accretion; concentration
(tích) increase by natural growth or addition; concentration

accuracy:
n.
(chính xác) quality of nearness to the truth or the true value

accurate:
a. Syn. precise; correct
(chính xác) capable of providing a correct ing or measurement; performing with care and precision

accusation:
n. Syn. indictment; charge
(tố cáo) indictment; charge of wrongdoing that is made against a person or other party

accuse:
v. Syn. blame; condemn
(tố cáo) blame; condemn

achieve:
v. Syn. accomplish; fulfill
(đạt) gain with effort; accomplish; fulfill

achievement:
n. Syn. feat; accomplishment
(thành tích) feat; accomplishment; award for completing a particular task or meeting an objective

acid:
n.
(axit) sour; water-soluble compounds having a sour taste; quality of being sarcastic, bitter, or scornful

acknowledge:
v. Syn. recognize; admit
(xác nhận) declare to be true or admit; express obligation, thanks

acquaint:
v. Syn. Inform
(làm quen) inform about; cause to come to know personally; make familiar

acquaintance:
n.
(quen) personal knowledge or information about someone or something

acquainted:
a.
(làm quen) known by or familiar with another; informed or familiar

acquire:
v. Syn. obtain; gain
(mua) gain through experience or effort; gain possession of; locate with tracking system

acquisition:
n. Syn. acquirement; attainment
(mua) act of contracting or assuming or acquiring possession of something

across:
ad.
(qua) from side to side; crosswise, or in a direction opposed to the length

activate:
v. Syn. encourage; stimulate
(kích hoạt) make active or more active; stimulate; make radioactive

actively:
ad. Syn. energetically; vigorously
(tích cực) energetically; vigorously; in an active manner; voluntarily, not passively

actual:
a. Syn. true; real
(thực) true; real; being, existing, or acting at the present moment; current

actually:
ad. Syn. truly; really
(thực sự) truly; really; in fact

acute:
a. Syn. keen; sharp
(cấp) quickly perceptive; keen; having a sharp point or tip; extremely sharp or severe

adapt:
v. Syn. alter; modify
(thích ứng) make fit for; change to suit a new purpose

adaptation:
n. Syn. modification; adjustment
(thích ứng) modification; alteration or adjustment in structure or habits

additional:
a. Syn. further; extra
(bổ sung) further; extra; supplemental or added to

additive:
n. Syn. addition; supplement
(phụ gia) addition; supplement

address:
v.
(địa chỉ) make a formal speech to; deal with or discuss; direct efforts or attention of

adequate:
a. Syn. sufficient; enough
(đầy đủ) sufficient; enough to meet a purpose

adhere:
v. Syn. stick; bond
(tuân thủ) stick fast; stick to firmly; be compatible or in accordance with

adhesive:
n. Syn. glue; paste
(keo) glue; paste ; substance that unites or bonds surfaces together

adjacent:
a. Syn. adjoining; neighboring
(lân cận) adjoining; neighboring; close to; lying near

adjoin:
v. Syn. attach
(phụ hợp) be next to; be contiguous to; border on

adjust:
v. Syn. adapt; regulate
(chỉnh) adapt; regulate

adjustment:
n.
(chỉnh) making or becoming suitable; adjusting to circumstances

administer:
v. Syn. govern; supervise
(quản trị) govern; supervise; give or apply medications

administration:
n. Syn. management; supervision; executive
(chính quyền) management; supervision; people who are in charge for management; activity of government for powers and duties

administrative:
a.
(hành chính) of or relating to or responsible for administration

admiration:
n.
(ngưỡng mộ) favorable judgment; feeling of pleasure, wonder, and approval

admire:
v. Syn. esteem; appreciate
(ngưỡng mộ) regard with wonder or astonishment; view with surprise; marvel at

admission:
n. Syn. admittance; entrance; access
(nhập học) act or practice of admitting; power or permission to enter

admit:
v.
(thừa nhận) permit to enter; receive; provide the right or a means of entrance to

admittedly:
ad. Syn. doubtlessly; surely
(thừa nhận) doubtlessly; in an acknowledged manner; confessedly

adolescence:
n. Syn. youth; juvenescence
(niên thiếu) state of growing up from childhood to manhood or womanhood; transitional period between youth and maturity

adolescent:
n.
(vị thành niên) a juvenile between the onset of puberty and maturity;

adopt:
v. Syn. accept
(thông qua) accept; take on; raise; take into one’s family

adoption:
n.
(nhận con nuôi) act of accepting with approval

adore:
v. Syn. idolize; adorn
(ngưỡng mộ) worship with profound reverence; pay divine honors to; regard with the utmost esteem and affection

adorn:
v. Syn. decorate
(tô điểm) enhance or decorate with or as if with ornaments

adornment:
n. Syn. embellishment; decoration
(trang sức) embellishment; decoration; something that beautifies or adorns; ornament

adult:
n.
(người lớn) one who has attained maturity or legal age; fully grown

advance:
v. Syn. further; progress
(trước) proceed; move forward; improve; moving forward

advanced:
a.
(tiến) improved; highly developed or complex; ahead of the times; progressive

adventure:
n. Syn. risk; venture
(phiêu lưu) something happens without design; chance; hazard; risk; danger

adventurous:
a. Syn. valiant; venturesome
(phiêu lưu) valiant; venturesome; inclined or willing to incur hazard or engage in adventures

adversary:
n. Syn. opponent; contestant
(đối thủ) opponent in contest; someone who offers opposition

adverse:
a. Syn. unfavorable; hostile
(bất lợi) in opposing direction; harmful or unfavorable; acting or serving to oppose

adversity:
n. Syn. poverty; misfortune
(nghịch cảnh) state of misfortune, hardship, or affliction; misfortune

advertise:
v. Syn. notify
(quảng cáo) give notice to; inform or apprise; make known; give public notice of

advisable:
a.
(nên) proper to be advised or to be done; expedient; prudent; y to receive advice

advocate:
v. Syn. urge; support
(biện hộ) speak, plead, or argue in favour of; plead for; push for something

aerial:
a.
(trên không) of the air or atmosphere; produced by or found in the air; performed in the air

affect:
v.
(ảnh hưởng đến) have an emotional or cognitive impact upon

affection:
n. Syn. fondness; love
(tình) fondness; tender feeling toward another; fondness

affectionate:
a. Syn. loving
(tình cảm) having affection or warm regard; loving; fond; kindly inclined; zealous

affiliate:
v. Syn. associate; incorporate
(liên kết) associate; incorporate

affirm:
v. Syn. assert; confirm
(khẳng định) assert; confirm

affirmation:
n. Syn. confirmation
(khẳng định) positive assertion; confirmation; solemn pledge by one who refuses to take an oath

affirmative:
a.
(khẳng định) confirmative; ratifying; giving assent or approval; confirming

afford:
v. Syn. pay; risk
(khả năng) pay; provide; have the financial means for; bear the cost of

affordable:
a.
(giá cả phải chăng) able to pay for

agency:
n.
(cơ quan) a business that serves other businesses; an administrative unit of government

agent:
n. Syn. representative; delegate; deputy
(đại lý) one that acts on behalf of other persons or organizations

aggravate:
v. Syn. worsen; exacerbate
(nặng) worsen; make worse or more troublesome

aggregate:
v. Syn. gather; accumulate
(tổng hợp) gather into a mass, sum, or whole; amount to

aggregation:
n.
(tập hợp) several things grouped together or considered as a whole

aggressive:
a.
(hiếu chiến) making assaults; unjustly attacking; combative; hostile; tending to sp quickly

aggressor:
n. Syn. attacker; assailant; invader
(xâm lược) one that engages in aggression; person who first attacks

agitate:
v. Syn. disturb
(kích động) cause to move with violence or sudden force; upset; disturb

agitation:
n. Syn. anxiety; disturbance
(kích động) anxiety; extreme emotional disturbance

agony:
n.
(khổ) extreme pain of mind or body; anguish; last struggle of life; death struggle

agreeable:
a. Syn. pleasing; acceptable
(dễ chịu) y to consent or submit; acceptable

agreement:
n.
(Thỏa thuận) state of agreeing; harmony of opinion, statement, action, or character

agriculture:
n.
(nông nghiệp) practice of cultivating the land or raising stock

aid:
n.
(viện trợ) person or thing that promotes or helps in something done; helper; assistant

ailment:
n. Syn. sickness; illness; affliction
(bệnh) sickness; illness; affliction

aim:
n. Syn. objective; object; plan
(mục tiêu) point or direct towards an object or spot with the intent of hitting it

air:
v.
(không) be broadcast on television or radio

aircraft:
n.
(máy bay) vehicle that can fly, such as an airplane, helicopter, balloon

aisle:
n.
(lối đi) passageway between rows of seats, as in an auditorium or an airplane; wing of a building

ajar:
a.
(khép hờ) half-open; slightly turned or opened

alarm:
n.
(báo động) any sound or information intended to give notice of approaching danger

album:
n.
(album) a list of names; a register for visitors; a blank book, in which to insert autographs sketches, memorial writing of friends, photographs

alert:
n.
(báo) warning serves; alarm; condition of heightened watchfulness or preparation for action

alien:
a. Syn. strange; unfamiliar; foreign
(lạ) dissimilar, inconsistent, or opposed in nature; very different place, society, or person

alienate:
v. Syn. estrange; transfer; separate
(xa lánh) cause to become unfriendly or hostile; transfer property or ownership; isolate or dissociate emotionally

alignment:
n. Syn. arrangement; association; alliance
(liên kết) arrangement; association; alliance

alike:
a. Syn. similar; resembling
(như nhau) similar; in the same manner or to the same degree

allergic:
a.
(dị ứng) excessively sensitive; susceptible; having an allergy

allergy:
n.
(dị ứng) hyper sensitivity reaction; abnormally high sensitivity to certain substances

alliance:
n.
(liên minh) state of being allied; act of allying or uniting; a union or connection of interests between families, states, parties

allocate:
v. Syn. assign
(giao) assign; distribute according to plan

allot:
v. Syn. distribute
(allot) parcel out in parts or portions; distribute to each individual concerned; assign as a share or lot

allowance:
n. Syn. authorization; permission
(phụ cấp) approval; act of allowing, granting, or admitting

alloy:
v. Syn. combine; mix
(hợp kim) combine; mix; make less pure; lessen or moderate

ally:
n. Syn. confederate; partner; collaborator
(đồng minh) confederate; partner; collaborator

alone:
a. Syn. solitary; by oneself
(một mình) solitary; by oneself

along:
ad.
(cùng) by the length; in a line with the length; onward; forward; in company; together

alongside:
ad.
(cùng) along or by the side; side by side with

alter:
v. Syn. modify; change; convert
(thay đổi) modify; cause to change; make different; convert

alternate:
a. Syn. substitute
(thay thế) happening or following in turns; succeeding each other continuously; substitute

alternation:
n.
(thay) successive change from one thing or state to another and back again

alternative:
a.
(thay thế) one of two or more things, ideas or courses of action that may be used; option; choice

altitude:
n. Syn. elevation; height
(độ cao) elevation especially above sea level; height

aluminum:
n.
(nhôm) silvery ductile metallic element

amateur:
a. Syn. nonprofessional; inexpert
(nghiệp dư) nonprofessional; lacking the skill of a professional, as in an art

amaze:
v. Syn. stun; astonish; shock
(ngạc nhiên) astonish; affect with wonder

amazement:
n. Syn. wonder; surprise
(ngạc nhiên) wonder; state of extreme surprise or wonder; astonishment

ambassador:
n.
(đại sứ) authorized messenger or representative

ambiguity:
n.
(mơ hồ) state of being ambiguous; doubtfulness or uncertainty

ambiguous:
a.
(mơ hồ) unclear or doubtful in meaning

ambition:
n. Syn. aspiration
(tham vọng) aspiration

ambitious:
a. Syn. aspiring; enterprising
(tham vọng) aspiring; having a strong desire for success or achievement

ambulance:
n.
(xe cứu thương) field hospital organized as to follow an army in its movements; wagon for conveying the wounded to hospital

amend:
v. Syn. correct; improve
(Sửa đổi) change for the better; improve; remove faults or errors

amendment:
n. Syn. correction; revision
(sửa đổi) correction; revision

amends:
n.
(sửa đổi) compensation for a loss or injury; recompense; reparation

amiable:
a. Syn. agreeable; lovable
(aver) good-natured and likable; lovable; warmly friendly

amicable:
a. Syn. friendly
(thân thiện) exhibiting friendliness or goodwill; not quarrelsome

amid:
ad. Syn. among
(giữa) in the middle of; among; surrounded by

ammunition:
n. Syn. weapon
(tiện nghi đạn dược) military stores or provisions; articles used in weapons, as powder, balls, shot, shells

amount:
n. Syn. quantity; sum
(lượng) total of two or more quantities; aggregate; sum

ample:
a. Syn. abundant
(phong phú) more than enough in size or scope or capacity; fairly large

amplification:
n.
(khuếch đại) addition of extra material or illustration or clarifying detail

amplify:
v. Syn. intensify; increase
(khuếch đại) broaden or clarify by expanding; intensify; make larger or more powerful; increase

amuse:
v. Syn. absorb; distract; bewilder
(giải trí) occupy in an agreeable, pleasing, or entertaining fashion; cause laughter or be funny; delude or deceive

analogy:
n. Syn. similarity; parallelism
(tương tự) similarity in some respects; comparison based on similarity

analysis:
n. Syn. study; investigation
(phân tích) study; investigation; process of breaking down a substance into its constituent parts

analytical:
a.
(phân tích) of analysis; resolving into elements or parts

analyze:
v. Syn. diagnose; examine; analyze
(phân tích) diagnose; examine

ancestor:
n. Syn. forefather; forebear
(tổ tiên) forefather; forebear; forerunner or predecessor

anchor:
v. Syn. fasten
(neo) secure or fasten firmly; be fixed in place; narrate or coordinate

anecdote:
n. Syn. episode; story
(giai thoại) short account of amusing or interesting event; short narrative; secret story of history or biography

angular:
a.
(góc) sharp-cornered; consisting of an angle or angles; stiff in manner

animate:
a.
(động) endowed with life; alive; living; animated

animation:
n.
(hoạt hình) act of animating, or giving life or spirit; state of being animate or alive.

ankle:
n.
(mắt cá chân) joint which connects the foot with the leg; tarsus

annex:
v. Syn. attach
(phụ lục) append or attach; take possession of; incorporate into an existing political unit

anniversary:
a.
(kỷ niệm) annual; yearly; annual return of the day on which any notable event took place

announce:
v. Syn. herald; proclaim
(thông báo) herald; give out; proclaim; make known publicly

announcement:
n.
(Thông báo) formal public statement; act of making known publicly

announcer:
n.
(luận viên) one who proclaims a message publicly

annoy:
v. Syn. disturb; irritate
(làm phiền) disturb, especially by minor irritations; irritate

annual:
a.
(năm) occurring or payable every year

annually:
ad. Syn. yearly
(năm) yearly; each year; returning every year; year by year

antagonism:
n. Syn. hostility; enmity
(đối kháng) active resistance; condition of being an opposing principle, force, or factor

antagonist:
n.
(đối kháng) one who contends with another, especially in combat; an adversary; opponent

antarctic:
a.
(Nam Cực) opposite to the northern or arctic pole; relating to the southern pole or to the region near it

antibiotic:
a. Syn. antibacterial
(kháng sinh) of or relating to chemical substance that kills microorganisms and cures infections

anticipate:
v. Syn. expect; predict
(dự đoán) act in advance of; deal with ahead of time; predict

anticipation:
n. Syn. expectation
(dự đoán) something expected; pleasurable expectation; wishing with confidence

antique:
n. Syn. relic; curio
(cổ) any furniture old and valuable; out of fashion

antonym:
n.
(trái nghĩa) word of opposite meaning; counter term

anxiety:
n.
(lo âu) concern something in state of painful uneasiness; state of restlessness and agitation

anxious:
a. Syn. eager; keen; worried
(lo lắng) eager; keen; worried; uneasy and apprehensive about an uncertain event or matter

anyhow:
ad.
(dù sao) in any way or manner whatever; at any rate; in any event

apart:
ad.
(nhau) separately, in regard to space or company; in a state of separation as to place; aside

ape:
v. Syn. imitate
(khỉ) imitate; mimic, as an ape imitates human actions

apologize:
v.
(xin lỗi) beg pardon

apology:
n. Syn. regret
(xin lỗi) acknowledgment expressing regret or asking pardon for a fault or offense; explanation or excuse

apparatus:
n. Syn. equipment
(bộ máy) a group of parts that work together to perform given function; appliance or device for particular purpose

apparent:
a. Syn. visible
(rõ ràng) capable of being seen, or easily seen; open to view; visible to eye

appeal:
n. Syn. attraction; charm
(kháng cáo) attraction; charm; attract; fascinate; challenge

appealing:
a. Syn. attractive; charming
(hấp dẫn) attractive; charming

appendix:
n. Syn. appendage; adjunct; concomitant
(phụ lục) something appended or added

appetite:
n. Syn. desire
(sự thèm ăn) instinctive physical desire, especially one for food or drink

applaud:
v. Syn. clap; acclaim
(hoan nghênh) acclaim; express approval, especially by clapping the hands

appliance:
n.
(thiết bị) durable goods for home or office use; device or instrument for household use

applicable:
a.
(áp dụng) capable of being applied; fit or suitable to be applied; having relevance

applicant:
n. Syn. candidate
(đơn) candidate

application:
n. Syn. diligence
(ứng dụng) close attention; work of applying something; verbal or written request for assistance

apply:
v. Syn. exert
(áp dụng) exert; put into service; avail oneself to;

appoint:
v. Syn. designate; nominate
(cử) designate; nominate

appointment:
n. Syn. arrangement
(hẹn) act of putting a person into a non-elective position; arrangement

appreciable:
a. Syn. considerable; perceptible
(đáng) considerable; perceptible

appreciate:
v. Syn. admire; value
(đánh giá cao) be thankful for; increase in worth; be thoroughly conscious of

appreciation:
n. Syn. recognition; taste
(đánh giá) recognition; taste; judgment or opinion, especially a favorable one

appreciative:
a.
(đánh giá cao) having or showing a just or y appreciation or perception

apprentice:
n.
(tập sự) works for an expert to learn a trade; beginner; learner

approach:
n. Syn. access; method
(tiếp cận) access; method

appropriate:
v. Syn. acquire; allocate
(thích hợp) acquire; take possession of for one’s own use; set apart for specific use

approval:
n. Syn. sanction; endorsement
(phê duyệt) official approbation; endorsement; act of approving

approve:
v. Syn. ratify
(chấp thuận) ratify; consider right or good; think or speak favorably of

approximate:
v. Syn. approach
(gần) approach; come near

approximately:
ad. Syn. about; roughly
(khoảng) about; roughly

apt:
a. Syn. appropriate; suitable
(apt) likely; exactly suitable; appropriate; quick to learn or understand

aptitude:
n. Syn. intelligence; talent
(aptitude) inherent ability; quickness in learning and understanding

arbitrary:
a. Syn. capricious; impulse
(độc đoán) randomly chosen; determined by chance or impulse, and not by reason or principle

arbitrator:
n. Syn. judge; arbiter
(trọng tài) someone chosen to judge and decide disputed issue; one having power to make authoritative decisions

arc:
n.
(hồ quang) continuous portion of a circle; something curved in shape

arch:
n.
(kiến trúc) any part of a curved line

archaeology:
n.
(khảo cổ) study of artifacts and relics of early mankind

architect:
n.
(Kiến trúc sư) one who designs and supervises the construction of buildings or other large structures

architecture:
n.
(kiến trúc) art and science of designing and erecting buildings; buildings and other large structures

ardent:
a. Syn. intense; passionate; zealous
(hăng hái) displaying or by strong enthusiasm or devotion; passionate

arduous:
a. Syn. hard; strenuous
(gian nan) demanding great effort or labor; difficult

area:
n.
(khu vực) plane surface, as of the floor of a room; open space in a building; the enclosed space; extent; scope; range

arena:
n.
(trường) playing field where sports events take place; large structure for open-air sports or entertainments

argue:
v.
(lập luận) invent and offer reasons to support or overthrow a proposition, opinion, or measure; debate

arise:
v. Syn. spring
(phát sinh) come up from a lower to a higher position; come above the horizon; spring up; come into action

aristocracy:
n.
(tầng lớp quý tộc) hereditary nobility; privileged class

aristocrat:
n.
(quý tộc) one of the aristocracy or people of rank in a community; one of a ruling class; a noble

arithmetic:
n.
(số học) theory of numerical calculations

armour:
n.
(giáp) defensive covering, as of metal, wood, or leather, worn to protect the body against weapons

arms:
n. Syn. weapon
(tay) weapons considered collectively; official symbols of a family

arouse:
v. Syn. excite; stimulate; awake
(đánh thức) excite; stimulate; awaken from or as if from sleep

arrange:
v. Syn. plan; schedule
(sắp xếp) put in proper order; dispose in the manner intended, or best suited for the purpose

arrangement:
n. Syn. composition; order
(sắp xếp) composition; order

array:
v. Syn. marshal
(mảng) set out for display or use; place in orderly arrangement

arrest:
v.
(bắt) stop or slow down; catch someone’s attention; take into custody

arrogance:
n. Syn. pride; haughtiness
(kiêu căng) overbearing pride; haughtiness; manifest feeling of personal superiority in rank, power, or estimation

arrogant:
a. Syn. overbearing; lofty
(kiêu ngạo) arising from feeling or assumption of one’s superiority toward others

article:
n. Syn. essay; editorial
(Bài viết) essay; editorial; individual thing or element of a class

artificial:
a. Syn. unreal
(nhân tạo) made by humans; produced rather than natural.

ascend:
v. Syn. climb; mount
(lên) climb; mount

ascertain:
v. Syn. discover; insure
(xác định) find out for certain; discover with certainty; make sure of

ascribe:
v. Syn. refer; attribute; assign
(gán) inscribe or dedicate; attribute to a specified cause, source, or origin; assign as a quality

ashamed:
a.
(xấu hổ) affected by shame; abashed or confused by guilt

aside:
ad.
(dành) on, or to, one side; out of a straight line, course, or direction; at a little distance from the rest

aspect:
n. Syn. respect; facet
(khía cạnh) distinct feature or element in a problem; a way in which something can be viewed by the mind

aspirin:
n.
(aspirin) white crystalline compound drug to relieve pain and reduce fever and inflammation

assassination:
n.
(ám sát) act of assassinating; killing by treacherous violence; murder of public figure by surprise attack

assault:
n. Syn. attack; onslaught
(tấn công) attack; onslaught

assemble:
v. Syn. gather
(lắp ráp) put together; bring or call together into a group or whole

assembly:
n. Syn. gathering; meeting
(lắp ráp) gathering; meeting; a group of persons gathered together for common reason

assert:
v. Syn. declare
(khẳng định) declare or state with confidence; put oneself forward boldly

assess:
v. Syn. estimate; judge
(đánh giá) estimate value; judge worth of something

assessment:
n. Syn. evaluation; judgment
(đánh giá) act of judging or assessing; amount determined as payable

assign:
v. Syn. appoint; allot
(giao) appoint; allot; make over; point out authoritatively or exactly

assignment:
n. Syn. task; job
(giao) task given to students; job; distribution; appointment

assist:
v. Syn. help
(hỗ trợ) give help or support to, especially as a subordinate

assistance:
n.
(trợ giúp) activity of contributing to fulfillment of a need or furtherance of an effort or purpose

assistant:
n. Syn. helper; aide
(trợ lý) helper; person who assists or helps someone else

associate:
v. Syn. pertain; connect
(liên kết) connect or join together; combine

association:
n. Syn. alliance; connection
(hiệp hội) connection, whether of persons of things; union of persons in a company or society for some particular purpose

assorted:
a. Syn. varied; miscellaneous
(các loại) varied; miscellaneous

assortment:
n. Syn. variety; conglomerate
(phân loại) variety; collection containing a variety of sorts of things

assume:
v. Syn. suppose; presume
(giả) suppose; presume; take on; bear

assumption:
n. Syn. hypothesis; supposition
(giả định) something taken for accepted as true without proof; taking over or taking possession of

assurance:
n. Syn. certainty; confidence; insurance; guaranty
(đảm bảo) promise or pledge; certainty; self-confidence; freedom from doubt

assure:
v. Syn. solidify; guarantee; convince
(đảm bảo) solidify; guarantee; convince

assured:
a.
(tâm) made sure; exhibiting confidence or authority; indubitable

astonish:
v. Syn. surprise; shock
(sửng sốt) surprise; shock

astound:
v. Syn. surprise; shock
(astound) affect with wonder; surprise; shock

astray:
a.
(lạc lối) away from the correct path or direction, either in a literal or in a figurative sense; wandering

astronomer:
n.
(nhà thiên văn học) a physicist who studies astronomy

astronomical:
a. Syn. celestial
(thiên văn) enormously large or extensive; relating to astronomy

astronomy:
n.
(thiên văn học) branch of physics that studies celestial bodies and universe as a whole

athlete:
n.
(vận động viên) sports man; one who contended for prize in public games

atlas:
n.
(bản đồ) a bound volume of maps, charts, or tables

atmosphere:
n. Syn. air
(không khí) air

atom:
n.
(nguyên tử) a tiny piece of anything; the smallest component of an element having the chemical properties of the element

atomic:
a.
(nguyên tử) of or relating to or comprising atoms; immeasurably small

attach:
v. Syn. fasten; annex
(chú) fasten; annex; be in contact with

attachment:
n. Syn. preference; affection
(gắn) a bond, as of affection or loyalty; fond regard; supplementary part; accessory

attack:
n.
(tấn công) offensive move; expression of strong criticism; hostile comment

attain:
v. Syn. gain
(đạt) achieve or accomplish; gain

attempt:
n. Syn. try; endeavor; effort
(cố gắng) action of trying at something

attend:
v.
(tham dự) be present at; go to; take care of; tend

attendance:
n.
(tham gia) act of being present

attendant:
n. Syn. aide; servant
(giả) aide; servant; accompanying; person who participates in a meeting

attention:
n. Syn. concentration; care
(sự chú ý) act or state of attending or heeding; application of the mind to any object of sense, representation, or thought

attentive:
a. Syn. considerate; thoughtful
(chu đáo) alert and watchful; considerate; thoughtful

attic:
n.
(gác) story or room directly below the roof of a building, especially a house;

attitude:
n.
(thái độ) posture, action, or disposition of a figure or a statue

attorney:
n. Syn. lawyer
(luật sư) lawyer; one who is appointed by another to act in his place or stead; proxy

attract:
v. Syn. lure; allure
(thu hút) draw to, or cause to tend to; engage or fix, as the mind, attention; invite or allure

attraction:
n. Syn. affinity; appeal
(thu hút) appeal; a characteristic that provides pleasure and attracts

attribute:
n. Syn. trait
(thuộc tính) essential quality; reputation; honor

auction:
n.
(đấu giá) public sale of property to the highest bidder

audience:
n. Syn. spectator; viewer
(khán giả) a group of people within hearing; crowd seeing a stage performance

auditorium:
n.
(thính) area of theater or concert hall where audience sits

august:
a. Syn. impressive; majestic; grand
(Tháng) impressive; majestic; inspiring awe or admiration

author:
n.
(tác giả) beginner, former, or first mover of anything; creator; originator; one who composes or writes book or composer

authority:
n. Syn. jurisdiction; power
(quyền) jurisdiction; power to enforce laws, exact obedience, command, determine, or judge; government

authorization:
n.
(ủy quyền) act of giving authority or legal power; establishment by authority; sanction or warrant

authorize:
v. Syn. empower; sanction
(ủy quyền) empower; give permission for; sanction

autobiography:
n.
(tự truyện) biography or story written by yourself

automate:
v.
(tự động) replace or enhance human labor with machines

automatic:
a. Syn. automated; mechanized; involuntary
(tự động) mechanized; operating with minimal human intervention; independent of external control

automation:
n.
(tự động hóa) act or process of converting the controlling of a machine or device to a more automatic system, such as computer or electronic controls

automobile:
n.
(ô tô) self-propelled vehicle suitable for use on street or roadway

autonomous:
a.
(tự trị) self-governing; not controlled by others or by outside forces; independent

autonomy:
n. Syn. independence; liberty
(tự chủ) independence; self-government or the right of self-government; self-determination

auxiliary:
a. Syn. aiding; supplementary
(phụ) helper, additional or subsidiary

avail:
v. Syn. profit; promote
(tận) turn to advantage of; be of service to; profit; promote

available:
a. Syn. free
(sẵn) convenient for use or disposal; not busy, free; obtainable; accessible

avenge:
v.
(trả thù) take vengeance for something, or on behalf of someone

avenue:
n.
(lộ) way or opening for entrance or exit place; passage by which a place may be reached; broad street

average:
a. Syn. typical; mediocre
(trung bình) typical; mean; achieve or reach on average

aviation:
n. Syn. flying; flight; aeronautics
(hàng không) art or science of flying; flight; aeronautics

avoid:
v. Syn. shun; prevent
(tránh) shield away from; prevent

aware:
a.
(biết) knowing; having knowledge or cognizance

awe:
n. Syn. d; admiration; amazement
(sợ hãi) mixed emotion of reverence, respect, d, and wonder; fear, as of something evil

awful:
a. Syn. terrible
(khủng khiếp) causing fear, d, or terror; extremely bad or unpleasant; terrible

awkward:
a. Syn. clumsy; inept
(vụng) difficult to handle or manage

awkwardly:
ad.
(vụng) in an uncomfortable, nervous or embarrassed way

axis:
n. Syn. shaft; pivot
(trục) the center around which something rotates; pivot

axle:
n.
(trục) pin or spindle on which a wheel revolves, or which revolves with a wheel; transverse bar or shaft connecting the opposite wheels of a car or carriage