arrogantI can't stand how arrogant he is!
prouddisapprovingDon't be too proud to admit you're wrong.
pompousdisapprovingWhat a pompous jerk!
self-importantdisapprovingThe room was filled with self-important politicians.
superiordisapprovingHer superior and smug manner made conversation unbearable.
conceitedHe's so conceited and self-centered, he thinks no one can understand his genius.
superciliousdisapprovingHis supercilious tone offended those around him.
condescendingdisapprovingThe management are so condescending to the staff and treats them like children.
haughtydisapprovingHe was haughty and cold.
snootyinformaldisapprovingI could never like such a snooty person.
imperiousHer imperious manner was intimidating.
stuck upinformaldisapprovingShe acts so stuck up, like she's too good for everyone and everything.
hoity-toityinformaldisapprovingHe's a hoity-toity writer who acts like his books are too good for the rest of us.
sniffyinformaldisapprovingHe's pretty sniffy about my taste in music.