ChildishCHILDISH, adjective1. Belonging to a child; trifling; puerile.When I became a man, I put away childish things. [[1 Corinthians 13#11|1 Corinthians 13:11]].2. Pertaining to a child; as childish yeas or age; childish sports.3. Pertaining to children; ignorant; silly; weak; as childish fear.