mystify v. + Add to list US //ˈmɪstəˌfaɪ// UK //mˈɪstɪfˌaɪ// mys·ti·fy SynonymsAntonymsEtymology Synonyms bafflebeatbewilderflummoxgetperplexposepuzzlestickVEX Antonyms demystifyOrigin From French mystifier, from Ancient Greek μυστικός (mustikós, “secret, mystic”) + Latin -ficare.