radiant Get Printable Handwriting (ra-di-ant) 3 syllables Rhymes Learn It! Spelling Test Definition adjective. 1 experiencing a feeling of wellbeing or happiness 2 sending out rays or waves Example Sentence The bride looked radiant on her wedding day. Synonyms beaming; beamy; bright Antonyms dull Rhymes Two Syllable Rhymes (1) radiant Three Syllable Rhymes (1) radiant Share with your friends: