UWMU Posted in U Best definition UWMU Ugly Without Make-UP. Refers to women who are wear a lot of facial make up that hides their true looks. Pronounced “you-moo.” “When you wake up next to her, you’ll see she’s just another uwmu.” How satisfied are you with the definition? Looking for UWMU meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 50 times.