Child″ish, a. 1. Of, pertaining to, befitting, or resembling, a child. “Childish innocence.” Macaulay.
2. Puerile; trifling; weak.
Methinks that simplicity in her countenance is rather childish than innocent.
Addison.
☞ Childish, as applied to persons who are grown up, is in a disparaging sense; as, a childish temper.