1. to regard something or somebody as lesser or inferior and to regard them in a snobby manner
look down on the working-class
The phrasal verb to look down on someone means to regard someone as inferior or to consider yourself as more important than someone else. You can use this in any context - social or professional - but you might think of someone in a higher position in work 'looking down on' those beneath them. The idea is that someone is arrogant and treats others disrespectfully.