frown(noun, verb) noun1. a facial expression of dislike or displeasureSimilar word(s): scowlDefinition categories: communication verb1. look angry or sullen, wrinkle one's forehead, as if to signal disapprovalSimilar word(s): glower, lour, lowerDefinition categories: body, grimaceSentences with frown as a verb:- Noisy gossip in the library is frowned upon.- Frown the impudent fellow into silence.