Found 3 items, similar to childishly.
English → Indonesian (quick) Definition: childish kebocah-bocahan, kekanak-kanakan
English → English (WordNet) Definition: childishly childishly adv : in a child-like manner; “he acted very childishly”
English → English (gcide) Definition: Childishly Childishly \Child"ish*ly\, adv. In the manner of a child; in a trifling way; in a weak or foolish manner. [1913 Webster]