/ Thesaurus / T Synonyms of tongue fish Find synonyms for: Noun1. tonguefish, tongue-fish, flatfishusage: left-eyed marine flatfish whose tail tapers to a point; of little commercial valueWordNet 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