asqueroso
/askeˈɾoso/ · A2 · adj
disgusting, repulsive, gross, distasteful
🤢 asco (disgust) + -oso (full of) = full of disgust
Built from asco, the everyday Spanish noun for disgust (¡Qué asco! = How gross!), plus the suffix -oso, which matches English -ous. So asqueroso is literally disgust-ous. The c becomes qu to keep the hard k sound before e.