transcription, транскрипция: [ ɪnfəntaɪl ]
1.
Infantile behaviour or illnesses are typical of very young children. ( FORMAL )
...infantile aggression.
ADJ : ADJ n
2.
If you accuse someone or something of being infantile , you think that they are foolish and childish.
This kind of humour is infantile and boring.
= childish
ADJ [ disapproval ]