duo Get Printable Handwriting (du-o) 2 syllables Rhymes Learn It! Spelling Test Definition noun. 1 two performers or singers who perform together 2 two items of the same kind Example Sentence The singing duo performed at a charity event. Synonyms duet; pair; couple Antonyms single Rhymes Two Syllable Rhymes (3) duo kuo kuow Three Syllable Rhymes (5) haruo kazuo matsuo nobuo yasuo Share with your friends: