1 adj Something or someone that is immature is not yet completely grown or fully developed.
She is emotionally immature.
In spite of some immaturity in the figure drawing and painting, it showed real imagination.
2 adj If you describe someone as immature, you are being critical of them because they do not behave in a sensible or responsible way., (disapproval)
She's just being childish and immature.
...his immaturity and lack of social skills.
Translation English Cobuild Collins Dictionary
1 adolescent, crude, green, imperfect, premature, raw, undeveloped, unfinished, unfledged, unformed, unripe, unseasonable, untimely, young
2 babyish, callow, childish, inexperienced, infantile, jejune, juvenile, puerile, wet behind the ears (informal)
adult, developed, fully-fledged, mature, mellow, responsible, ripe
English Collins Dictionary - English synonyms & Thesaurus
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