D defs.my
Entry 2 senses Webster, 1913

Childish

/(chīld"ĭsh)/ · Child·ish · IPA /ˈt͡ʃaɪldɪʃ/
01 a. Of, pertaining to, befitting, or resembling, a child.
  1. 1.
    Of, pertaining to, befitting, or resembling, a child.
  2. 2.
    Puerile; trifling; weak.
    “Methinks that simplicity in her countenance is rather childish than innocent.” Addison.