immature

Từ điển Oxford Advanced Learner 8th

im·ma·ture AW BrE [ˌɪməˈtjʊə(r)] NAmE [ˌɪməˈtʃʊr] NAmE [ˌɪməˈtʊr] adjective
1. behaving in a way that is not sensible and is typical of people who are much younger
•immature behaviour
2. not fully developed or grown
•immature plants
Opp: ↑mature
Derived Word: ↑immaturity

Word Origin:
[immature immaturity] mid 16th cent. (in the sense ‘premature’, referring to death): from Latin immaturus ‘untimely, unripe’, from in- ‘not’ + maturus ‘ripe’.

Example Bank:
•Although she was older than her husband, she was emotionally quite immature.
•He displays very immature behaviour for a boy of 16, running about the classroom and yelling.
•Oh, don't be so immature.
•The immature birds have shorter tails and brown, speckled plumage.

• Từ đồng nghĩa / Synonyms:
  unfledged, green, unripe, unripened, young
• Từ trái nghĩa / Antonyms:
  fledged, mature, ripe, old