kaput

1 facing certain defeat, disaster, or death once the Germans were forced to retreat from Stalingrad, the Nazi cause was kaput Synonyms dead, done, doomed, finished, done for (also kaputt), ruined, sunkRelated Words endangered, imperiled (or imperilled)

2 having passed its time of use or usefulness hard-line Soviet-style Communism became kaput in Russia Synonyms antiquated, archaic, dated, démodé, demoded, fossilized, obsolete (also kaputt), medieval (also mediaeval), moribund, mossy, moth-eaten, neolithic, Noachian, outdated, outmoded, out-of-date, outworn, passé, prehistoric (also prehistorical), rusty, Stone Age, superannuatedRelated Words aging (or ageing), obsolescent; discarded, disused, inoperable, unusable, unworkable, useless; dead, defunct, expired, extinct, vanished; dormant, fallow, free, idle, inactive, inert, inoperative, latent; ancient, antediluvian, antique, dateless, fusty, musty, old; oldfangled, old-fashioned, old-time, retro, vintage; aged, age-old, hoary, venerable; atavistic, bygone, erstwhile, former, historic, historical, late, old-world, pastNear Antonyms contemporary, current, mod, modern, new, newfangled, new-fashioned, present-day, recent, ultramodern, up-to-date, up-to-the-minute; fresh; modernized, refurbished, remodeled, renewed; functional, operable, operational, workable; active, alive, busy, employed, functioning, operating, operative

3 not being in working order the heating system went kaput on the coldest day of the year Synonyms down, inoperative, inoperable (also kaputt), malfunctioning, nonfunctional, nonfunctioning, nonoperatingRelated Words broken; off; deactivated, deadlocked, ineffective, ineffectual, nonproductive, unproductive, unusable, unworkable, uselessNear Antonyms effective, effectual, employable, performing, producing, productive, serving, usable (also useable), useful, viable, workableAntonyms functional, functioning, operable, operant, operating, operational, operative, running, working