[child.ish] adj (bef. 12c) 1: of, relating to, or befitting a child or childhood
2. a: marked by or suggestive of immaturity and lack of poise "a ~ spiteful remark" b: lacking complexity: simple "it's a ~ device, but it works" c: deteriorated with age esp. in mind: senile -- child.ish.ly adv -- child.ish.ness n