masterful Get Printable Handwriting (mas-ter-ful) 3 syllables Rhymes Learn It! Spelling Test Definition adjective. 1 having or revealing supreme mastery or skill 2 able to deal authoritatively with affairs Example Sentence The actor gave a masterful performance. Synonyms expert; skillful; virtuoso Antonyms unskilled Rhymes Three Syllable Rhymes (1) masterful Share with your friends: