/ Thesaurus / T Synonyms of twin falls Find synonyms for: Noun1. Twin, Twin Fallsusage: a waterfall in the Snake River in southern Idaho2. Twin Fallsusage: a town on the Snake River in south central Idaho near the Twin FallsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ravenous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language