diagram Get Printable Handwriting (di-a-gram) 3 syllables Rhymes Learn It! Spelling Test Definition noun. a plan or drawing that shows how something works or how different parts fit together;verb. to show by a the above Example Sentence He made a diagram to go along with the instructions. Synonyms design; plan; drawing; sketch of form Antonyms thought Rhymes Three Syllable Rhymes (1) diagram Share with your friends: