/ Thesaurus / F Synonyms of fittingness Find synonyms for: Noun1. fitness, fittingness, suitability, suitablenessusage: the quality of being suitable; "they had to prove their fitness for the position"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language