high-and-mighty
high-and-mighty {adj.}, {informal}
Feeling more important or superior to someone else; too proud of yourself.
John wasn't invited to the party, because he acted too high-and-mighty.
Mary become high-and-mighty when she won the prize, and Joan would not go around with her any more.
Compare: STUCK-UP.
Categories:
Source: A Dictionary of American Idioms
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