/ Thesaurus / F Synonyms of formidability Find synonyms for: Noun1. formidability, toughness, difficulty, difficultnessusage: impressive difficultyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language