perish

1 to stop living 12 people perished in the plane crash Synonyms check out, conk (out), croak [slang], decease, demise, depart, drop, end, exit, expire, fall, flatline, go, kick in [slang], kick off [slang], pass (on), pass away, part, peg out [chiefly British], die, pop off, step out, succumbRelated Words predecease; consume, disappear, dry up, fade, failNear Antonyms come to, revive; linger; be, exist, subsist; flourish, prosper, thriveAntonyms breathe, live

2 chiefly British  to go through decomposition after being left out in the summer heat, the milk perished and had to be thrown out Synonyms break down, corrupt, decompose, disintegrate, fester, foul, mold, molder, decay [chiefly British], putrefy, rot, spoilRelated Words sour, turn, turn off [British]; contaminate, defile, pollute, taint; addle, curdle, ferment; mortify; rust; crumble, decline, degenerate, descend, deteriorate, dilapidate, sink, witherNear Antonyms age, develop, grow, mature, ripen; refresh, renew, restore; cleanse, purify; assemble, compose, integrate; ameliorate, better, improve, meliorate