/ Thesaurus / T Synonyms of tuna fish Find synonyms for: Noun1. tuna, tuna fish, tunny, saltwater fishusage: important warm-water fatty fish of the genus Thunnus of the family Scombridae; usually served as steaksWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language