malfunctioning Get Printable Handwriting Rhymes Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. not working properly or correctly. Example Sentence The computer is malfunctioning. More Example Sentences She noticed the lights were malfunctioning again. Synonyms broken; faulty; defective Antonyms working; functioning; operating Hear It! Say It! Write It! malfunctioning Switch to cursive Start Rhymes Three Syllable Rhymes (1) functioning Four Syllable Rhymes (1) malfunctioning Share with your friends: