/ Thesaurus / S Synonyms of sabertooth Find synonyms for: Noun1. saber-toothed tiger, sabertooth, big cat, catusage: any of many extinct cats of the Old and New Worlds having long swordlike upper canine teeth; from the Oligocene through the PleistoceneWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language