infantile


infantile

adjective

Definition of INFANTILE

having or showing the annoying qualities (as silliness) associated with children <the infantile humor that teenage boys are justly famous for>
Related Words boyish, brattish, bratty, girlie (or girly), girlish; childlike, innocent, naive (or naïve), simple, simplistic, unsophisticated
Antonyms adult, grown-up, mature

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