man·ner·is·tic \|manə|ristik\adjective alsoman·ner·is·ti·cal\-tə̇kəl\ : exhibiting or characterized by mannerisms; especiallypsychiatry: characterized by stylized, individualized, often bizarre patterns or traits of behavior • man·ner·is·ti·cal·ly\-tə̇k(ə)lē\adverb