monarch Get Printable Handwriting (mon-arch) 2 syllables Rhymes Learn It! Spelling Test Definition noun. one who rules over a people with a sole and supreme and usually hereditary authority; from the Greek root mono meaning One Example Sentence The monarch ruled for fifty years. Synonyms ruler; king; queen; czar; sovereign Antonyms peasant Rhymes Two Syllable Rhymes (1) monarch Share with your friends: