Scorn is open disrespect for someone or something. It can also be disrespect coupled with feelings of intense dislike.
The noun scorn describes your feelings of disdain when you encounter something you view as worthless or inferior — like, for instance, a talk show that gets all its facts wrong. Use the verb form for those times when you’re actively expressing scorn. You might scorn a politician who spends $100,000 on travel while claiming to work hard promoting middle-class values.