/ Thesaurus / B Synonyms of battle of thermopylae Find synonyms for: Noun1. Thermopylae, battle of Thermopylaeusage: a famous battle in 480 BC; a Greek army under Leonidas was annihilated by the Persians who were trying to conquer GreeceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: apiary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language