What is the opposite of immature?

Need antonyms for immature? Here's a list of opposite words from our thesaurus that you can use instead.

Contexts ▼▲ Opposite of being, or relating to those, of a young age Opposite of not fully mature or developed Opposite of annoyingly or embarrassingly immature in nature or behavior Opposite of lacking refined worldly knowledge or tastes Opposite of for, or denoting, young or younger people Opposite of young in age, having not reached maturity Opposite of lacking sense, meaning, or purpose (figuratively, of people) Opposite of having a naive or unsuspecting nature Opposite of newly produced or obtained Opposite of new to an activity or job and therefore lacking experience or skill Opposite of lacking intelligence or sense Opposite of relating to an immature, undeveloped, or basic form Opposite of foolish or lacking in sense Opposite of not (as) fully developed as expected Opposite of naive or innocent as a child would be (of an organ or body part) Opposite of having become biologically functionless in the course of evolution Opposite of somewhat small Opposite of rash Opposite of characterized by a period of development or formation … more ▼ ▲ Adjective ▲ Opposite of being, or relating to those, of a young age adult grown-up mature matured ripe experienced grown old older senile full-grown fully-grown fully grown fully-fledged sophisticated practicedUS practisedUK matronly fledged initiated postpubescent infant of age trained seasoned skilled knowledgeable familiar versed tasty schooled educated Adjective ▲ Opposite of not fully mature or developed developed mature adult advanced old elderly older senior veteran matured grown-up grown experienced progressive seasoned sophisticated grayUS olden greyUK worldly worldly-wise nonagenarian senile septuagenarian grizzled geriatric doddering octogenarian ageingUK centenarian hoary senescent ancient decrepit venerable agingUS aged grown up tottering dilapidated established frayed tattered rickety antiquated full-grown worn out more ❯ Adjective ▲ Opposite of annoyingly or embarrassingly immature in nature or behavior manly sensible sophisticated adultish serious wise full-grown fully-grown fully grown fully-fledged mature adult grown-up ripe experienced ripened full-fledged full-blown grown developed responsible matured fully developed moribund dying distinct complete reasonable rational down-to-earth levelheaded old older mellow big of age middle-aged aged soft tender considered settled stable grownup evolved seasoned improved established initiated perfected highly developed fully-developed full grown more ❯ Adjective ▲ Opposite of lacking refined worldly knowledge or tastes sophisticated worldly cosmopolitan experienced knowing worldly-wise advanced cultured deceitful dishonest refined upper-class material earthly Adjective ▲ Opposite of for, or denoting, young or younger people older senior elder higher-ranking superior Adjective ▲ Opposite of young in age, having not reached maturity adult grown-up mature old aged elderly matured ageingUK agingUS ancient decaying decrepit doddering hoary senile tired waning weary experienced over the hill Adjective ▲ Opposite of lacking sense, meaning, or purpose sensible significant meaningful intelligent serious bright profound smart weighty worthwhile Adjective ▲ (figuratively, of people) Opposite of having a naive or unsuspecting nature worldly hardened knowing sophisticated aware knowledgeable mature astute cultivated enlightened grasping perceptive seasoned cosmopolitan worldly-minded worldly-wise experienced cultured shrewd guileful streetwise smart wise politic matured street smart street-smart educated artful savvy wily intelligent worldly wise well-traveled “These kinds of horror stories might scare kids, but they're unlikely to scare worldly adults.” Adjective ▲ Opposite of newly produced or obtained old ancient outdated aged antediluvian antiquated dated expired archaic defunct extinct fusty obsolete outmoded antique mediaevalUK medievalUS obsolescent outworn passé prehistoric prehistorical rusty creaky moribund neolithic parachronistic out of date “Let's throw out the old and expired goods in our pantry.” Adjective ▲ Opposite of new to an activity or job and therefore lacking experience or skill experienced professional skilled trained adept expert veteran capable proficient qualified accomplished educated crackerjack masterly practisedUK competent great master tried ace good pro knowledgeable mature seasoned skillfulUS crack dynamite refined consummate familiar polished virtuoso adroit instructed masterful versed accustomed hardened practicedUS skilfulUK long-serving well trained well versed well-versed worldly cultivated cultured initiated knowing sophisticated savvy worldly-wise tested inured long-time old-time weathered up to speed old hand wise to ways battle-scarred been around not born yesterday broken in in the know been there of the old school more ❯ “Only our experienced pilots were allowed to fly this new airplane at the time.” Adjective ▲ Opposite of lacking intelligence or sense apt brainy bright brilliant clever fast hyperintelligent intelligent keen nimble quick quick-witted sharp sharp-witted smart supersmart ultrasmart Adjective ▲ Opposite of relating to an immature, undeveloped, or basic form developed advanced complete higher later mature refined sophisticated matured evolved grown established late progressive forward settled enhanced improved perfected full-fledged full-grown full-blown high Adjective ▲ Opposite of foolish or lacking in sense sensible judicious prudent sagacious sage sane sapient sound wise considered intelligent smart thoughtful shrewd serious responsible perceptive astute worldly mature rational reasonable logical careful cautious unfrivolous discreet sober earnest pragmatic learned advisable tactful punctilious cultured meticulous dependable politic sophisticated levelheaded reasoned enlightened refined well-grounded serious-minded level-headed sharp insightful discerning clever guileful crafty profound cynical wily observant knowing foxy alert accurate untrusting discriminating acute tricky hardheaded savvy scepticalUK farsighted calculating devious argute incredulous wary ingenious cunning unbelieving perspicacious calculated streetwise sly heady subtle suspecting suspicious slick artful beguiling astucious canny scheming skepticalUS brainy sharp-witted clear-sighted clear-eyed wised up quick-witted on the ball more ❯ Adjective ▲ Opposite of not (as) fully developed as expected developing growing Adjective ▲ Opposite of naive or innocent as a child would be complicated jaded untrusting Adjective ▲ (of an organ or body part) Opposite of having become biologically functionless in the course of evolution complete developed functional perfect practical useful well developed Adjective ▲ Opposite of somewhat small big biggish considerable goodly grand great handsome husky king-size king-sized large largish outsize outsized overscale overscaled oversize oversized sizable sizeable substantial tidy whacking whopping huge king size Adjective ▲ Opposite of rash afraid cowardly fearful meek reasonable shy timid Adjective ▲ Opposite of characterized by a period of development or formation destructive noninfluential Find more words! 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Sentences with the word immature Words that rhyme with immature What is the plural of immature? What is the adverb for immature? What is the adjective for immature? What is the noun for immature? Translations for immature Use our Antonym Finder Nearby Words immaturely immaturities immaturity immeasurability immeasurable immeasurableness immaterial to immaterialness immaterially immateriality immaterialities immaterial 8-letter Words Starting With i im imm imma immat immatu immatur