To look on passively or without being able to intervene while something happens; to witness helplessly.

to look down on others from a position of snobbery; to treat people with contempt based on their status or appearance

To view or treat someone with a different attitude than usual, typically signifying special respect or favorable treatment; can also imply looking down on someone or discrimination depending on context.

(colloquial) to be unable to look at something because it is hideous, appalling, or embarrassing

to look at someone with suspicion, disapproval, or distrust

To see through something immediately or at first glance.