/ Thesaurus / X Synonyms of xerxes i Find synonyms for: Noun1. Xerxes I, Xerxes the Greatusage: king of Persia who led a vast army against Greece and won the battle of Thermopylae but was eventually defeated (519-465 BC)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language