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See arrogant in Webster's New World Roget's A-Z Thesaurus II
Overly convinced of one's own superiority and importance:
haughty, high-and-mighty, insolent, lofty, lordly, overbearing, overweening, prideful, proud, supercilious, superior. Idiom: on one's high horse. See attitudeLearn more about arrogant