/ Thesaurus / F Synonyms of fin whale Find synonyms for: Noun1. finback, finback whale, fin whale, common rorqual, Balaenoptera physalus, rorqual, razorbackusage: large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and PacificWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language