adult

1 relating to or typical of adults; displaying proper maturity an adult reaction to the issue Synonyms grown-up, mature Near Antonyms childish, infantile, kiddish Antonyms adolescent, immature

2 dealing in or with explicitly sexual material an adult magazine Synonyms mature, pornographic, porny, X-rated Related Words hard-core, soft-core; bedroom, erotic (also erotical), sexy, suggestive; bawdy, coarse, crude, dirty, filthy, foul, gross, indecent, lascivious, lewd, lustful, nasty, obscene, ribald, salacious, smutty, unprintable, vulgar, wanton; immodest, kinky, prurient; earthy, racy, salty; indecorous, unbecoming; debasing, perverted, profane; naughty, wicked Near Antonyms priggish, prim, prudish, puritanical, straitlaced (or straightlaced), Victorian; correct, decent, decorous, genteel, polite, proper, seemly Antonyms clean, G-rated

3 fully grown or developed insects that are butterflies in their adult stage Synonyms mature, full-blown, full-fledged, matured, ripe, ripenedRelated Words aged, aging (or ageing), long-lived, old, older; golden, mellowNear Antonyms blooming, blossoming, burgeoning, flourishing, flowering; undeveloped, unfinished, unfledged, unformedAntonyms adolescent, green, immature, juvenile, unripe, unripened, young, youngish, youthful