/ Thesaurus / I Synonyms of imperiousness Find synonyms for: Noun1. imperiousness, domineeringness, overbearingness, arrogance, haughtiness, hauteur, high-handedness, lordlinessusage: the trait of being imperious and overbearingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language