To regard (someone or something) with strong contempt.
noun
A feeling of contempt or scorn.
ride roughshod over
verb
To treat (someone) roughly or without care, control, moderation, or respect; to act in a bullying manner toward (someone); to damage (someone or something).
How often have the words disdain and ride roughshod over occurred in a corpus of books? (source: Google Ngram Viewer )