mature

1 fully grown or developed I like pears when they're still hard, before they're mature Synonyms adult, full-blown, full-fledged, matured, ripe, ripened Related Words aged, aging (or ageing), long-lived, old, older; golden, mellow Near Antonyms blooming, blossoming, burgeoning, flourishing, flowering; undeveloped, unfinished, unfledged, unformed Antonyms adolescent, green, immature, juvenile, unripe, unripened, young, youngish, youthful

2 having reached the date at which payment is required mature bonds Synonyms dueRelated Words delinquent, outstanding, overdue, owed, owing, receivable, unpaid, unsettled; payableNear Antonyms cleared, liquidated, paid (off or up), repaid, settled; prepaidAntonyms undue

3 relating to or typical of adults; displaying proper maturity that wasn't a very mature response to my well-meaning criticism Synonyms grown-up, adultNear Antonyms childish, infantile, kiddishAntonyms adolescent, immature

4 dealing in or with explicitly sexual material a mature talk show that is available only on pay-cable Synonyms adult, pornographic, porny, X-ratedRelated 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, wickedNear Antonyms priggish, prim, prudish, puritanical, straitlaced (or straightlaced), Victorian; correct, decent, decorous, genteel, polite, proper, seemlyAntonyms clean, G-rated