adjective
- relating to or characteristic of infants or very young children
- showing a lack of emotional or intellectual maturity; childishly immature
Usage: often disapproving
Examples
- The doctor specialized in infantile diseases and disorders.
- Infantile reflexes typically disappear as babies develop.
- His infantile behavior embarrassed everyone at the meeting.
- She threw an infantile tantrum when she didn’t get her way.
- The comedian’s infantile humor appealed mainly to young audiences.
- Stop being so infantile and act your age.
- Infantile paralysis was once a common term for polio.