Also,
look down one's nose at. Regard with contempt or condescension, consider oneself superior to. For example, When it comes to baking, Beth is a purist--she looks down on anyone who uses a mix, or Seniors have a way of looking down their noses at juniors. The first expression dates from about 1700, the second from about
1900.
Definition: hold in contempt
Antonyms: approve, honor, laud, look up to, praise