riotous

1 causing or intended to cause laughter his riotous mugging always has everyone in hysterics Synonyms antic, chucklesome, comedic, comic, comical, droll, farcical, hilarious, humoristic, humorous, hysterical (also hysteric), killing, laughable, ludicrous, ridiculous, funny, risible, screaming, sidesplitting, uproariousRelated Words amusing, diverting, entertaining; clownish, knockabout, slapstick, slapsticky, zany; facetious, flip, flippant, pert, smart, smart-aleck, smart-alecky, snickery; jocular, playful, waggish; campy, jokey (also joky); priceless, rich, whimsical, witty, wry; blithesome, gleeful, jocose, jocund, jolly, jovial, laughing, mad, merry, mirthfulNear Antonyms earnest, grave, no-nonsense, sedate, serious, severe, sober, sobersided, solemn, somber (or sombre), staid, unsmiling, weighty; affecting, moving, poignant, touching, tragic (also tragical); lachrymose, mournful, sad, sorrowful, tearful, woefulAntonyms humorless, lame, unamusing, uncomic, unfunny, unhumorous, unhysterical

2 pouring forth in great amounts a painting by that artist is usually a riotous display of color Synonyms copious, galore, gushing, lavish, profuseRelated Words abounding, abundant, ample, bounteous, bountiful, liberal, plenteous, plentiful; extravagant, luxuriant; fat, fecund, fertile; free, munificent, openhanded, unsparing, unstinting; excessive, immoderate, redundant; adequate, complete, enough, sufficientNear Antonyms meager (or meagre), niggardly, poor, scant, scanty, spare, sparse, stingy; deficient, inadequate, incomplete, insufficient, lacking, scarce, unsatisfactory, wanting; bare, mere, minimalAntonyms dribbling, trickling