ARROGANCE
one's nose is in the air
one is acting conceited or aloof. (Note the variation with always. )Mary's nose is always in the air.Her mother's nose was in the air, too.
Pride goes before a fall
a saying meaning that someone who behaves in an arrogant or vain way is likely to suffer misfortune. (From the Bible.)Bert was so busy admiring his reflection in a shop window that he stepped in a puddle. Pride goes before a fall.Jean was boasting about how well she thought she'd done on her final exams, but she failed them all. You know what they say. Pride goes before a fall.
too big for one's britches
too haughty for one's status or age. (Folksy or informal.)Bill's getting a little too big for his britches, and somebody's going to straighten him out.You're too big for your britches, young man! You had better be more respectful.