infantine

/ˈɪnfənˌtaɪn/
adjective
  1. 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.
  2. 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.
Antonyms
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