Asqueroso literally means "disgusting" or "gross". While it can describe an object, in this song, it's used to refer to a person, specifically a man.
Kali Uchis uses this strong word to describe an unwanted man who approaches the listener while dancing. The lyrics advise: "Y si un asqueroso viene y empieza a hablar, dile 'La música está fuerte, no te puedo escuchar'" (And if a disgusting guy comes and starts talking, tell him 'The music is loud, I can't hear you'). It's a memorable and assertive way to dismiss someone unwelcome.
"Muévelo" is Kali Uchis telling a heartbroken friend to stop crying alone in her room and come dance instead. The song opens gently, coaxing her out the door, then turns into a confident, playful chorus about moving her body and shutting down anyone ("un asqueroso," a creep) who tries to bother her on the dance floor.
The verses mix Spanish and English, a style Kali Uchis is known for, and the message stays simple throughout: heartbreak passes, and dancing is how you get your power back. She even name-drops Shakira while telling her friend to move her hips like nobody's watching.
By the end, "Muévelo" isn't really about one bad relationship. It's an anthem for shaking off a rough night and reminding yourself you're still that girl.