to have, express, an unfavourable opinion

condemn

to treat (a person) in a pleasant and helpful way but really wanting to show one is more important or superior

condescend

to show one's dislike by using a wrinkled nose and an insincere smile (and perhaps despising words)

mock, condemn

(to make) a short, unpleasant laugh (especially rude or to show lack of respect)

sneer

to refuse (an offer etc) because of anger, pride etc

turn away; ignore