A person who believes he or she are superior to others. Often times show rude, snobbish behavior; arrogant.
e.g.The show “Sweet 16” on MTV is a dreadful chronicle of rich, stuck-up brats going about planning their overpriced sixteenth birthday party.
e.g.Brian is so stuck-up he dared Joe to ride a skateboard. Joe refused and Brian called him a chicken. I wouldn't be surprised if his wife is as stuck-up as he is.