immature
/ɪməˈtjʊə(ɹ)/ adjective, noun
Forms immatures
- adjective (now rare) Occurring before the proper time; untimely, premature (especially of death).
- adjective Not fully formed or developed; not grown.
- adjective Childish in behavior; juvenile. “You're only young once, but you can be immature the rest of your life.”
- noun An immature member of a species.
Synonyms
infantile milky babish babyish bairnish childish dootsie hissy lactifluous infantine kiddish juvenile puerile young green unripe unripened unfledged
Antonyms
Etymology
From Middle French immature. Partially displaced unripe, from Old English unrīpe (“unripe, immature”).
Webster’s 1913
- adjective Not mature; unripe; not arrived at perfection of full development; crude; unfinished; as, immature fruit; immature character; immature plans. "An ill-measured and immature counsel." Bacon.
- adjective Premature; untimely; too early; as, an immature death. [R.] Jer.
Etymology [L. immaturus; pref. im- not + maturus mature, ripe. See Mature.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “immature”, CC BY-SA 4.0. Details