malfunctioning Get Printable Handwriting Rhymes Learn It! Spelling Test Definition verb. fail to function or function improperly;adjective. not performing or able to perform its regular function Example Sentence The computer is malfunctioning. Synonyms incorrect; faulty; out of order Antonyms correct; working properly Rhymes Three Syllable Rhymes (1) functioning Four Syllable Rhymes (1) malfunctioning Share with your friends: