ˈchīldish, -ēsh adjective
Etymology: Middle English childishe, from Old English cildisc, from cild child + -isc -ish
1. : of, relating to, befitting, or resembling a child
a childish simplicity
I fell sick with some childish complaint — Corra Harris
a childish face
2. : marked by immaturity or simplemindedness : puerile , petty
a childish and spiteful remark
• child·ish·ly adverb
• child·ish·ness noun -es