unchildlike

English

Etymology

un- +‎ childlike

Adjective

unchildlike (comparative more unchildlike, superlative most unchildlike)

1. Not childlike; inappropriate for a child to do or be
   • 2009 January 11, Marc Lacey, “In Mexico, Curbing Violence Before It Is Learned”, in New York Times‎^[1]:

     There are violent video games and television shows, he said, that expose children to unchildlike behavior.