look down on sb/sth
(infml 口) regard sb/sth with contempt; consider sb/sth inferior to oneself; despise sb/sth 鄙视或看不起某人[某事物]; 认为某人[某事物]不如己
She looks down on people who´ve never been to university. 她瞧不起没上过大学的人.
He was looked down on because of his humble background. 他因家世寒微而被人看不起.