infantine
/ˈɪnfənˌtaɪn/
adjective
- Relating to or characteristic of a very young child or baby.
- She kept a collection of infantine photographs from her first year.
- The nursery was decorated with infantine patterns of bunnies and stars.
- The infantine giggles of the toddler filled the room with joy.
- Immature or childish in behavior or thought.
- His infantine tantrums at the office made him difficult to work with.
- Stop being so infantine and take responsibility for your mistakes.
- The politician's infantine insults during the debate embarrassed his supporters.