im ‧ ma ‧ ture AC /ˌɪməˈtʃʊə $ -ˈtʃʊr/ BrE AmE adjective
[ Word Family: verb : ↑ mature ; noun : ↑ maturity ≠ ↑ immaturity ; adverb : ↑ maturely ≠ IMMATURELY ; adjective : ↑ mature ≠ ↑ immature ]
1 . someone who is immature behaves or thinks in a way that is typical of someone much younger – used to show disapproval SYN childish OPP mature :
He forgave his son’s immature behaviour.
2 . not fully formed or developed:
measures to protect immature whales
—immaturity noun [uncountable]