enthusiasm Get Printable Handwriting (en-thu-si-asm) 4 syllables Rhymes Learn It! Spelling Test Definition noun. a strong interest in something; something that causes such great interest in an activity Example Sentence I have a lot of enthusiasm in teaching you how to spell. Synonyms excitement; emotion; energy; eager; interest Antonyms aloofness ; apathy Rhymes Five Syllable Rhymes (1) enthusiasm Share with your friends: