JARGON
Confused, unintelligible, meaningless talk; special vocabulary used only by members of a group or trade – Variety, a newspaper written in theatrical jargon.
Synonyms: gibberish, argot, cant
JAUNTY
Having an air of easy carelessness or liveliness – walked with a jaunty step.
Synonyms: sprightly, airy, gay, nonchalant, debonair
Antonyms: somber, staid
JEOPARDY
Danger – His life was in jeopardy.
Synonyms: hazard, peril
JETTISON
To throw overboard (as cargo); to throw off (as a burden or something in the way )- jettisoned their old candidate as a political liability.
JUDICIOUS
Wise; using or exhibiting good judgment – a well-chosen plan, termed judicious by all.
Synonyms:discreet, politic, discerning