Pronunciation (UK) (US) IPA (key): /jʌm/ or [jʌm] Audio (AU)(file) Interjection Interjectionyum You say yum when you are happy or delighted about something, usually food.Synonym: yummyAntonym: yuck Yum! That apple pie was so tasty!Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads