immature
Translation
immature, childish, not fully developed
Examples
He's too immature to have a serious relationship.
He's too immature to have a serious relationship.
The young birds are still immature.
The young birds are still immature.
Grammar Patterns
((sb./sth.)) is immature not fully developed or behaving younger than their age His behavior was very immature.
Similar Words
Synonyms: childish, juvenile, undeveloped; Antonyms: mature, adult, developed
Etymology
From 'in-' (not) + 'mature'. Simply means 'not mature'.
Memory Tips
This word is the direct opposite of 'mature'. The prefix 'im-' means 'not'.