/ Thesaurus / B Synonyms of benthal Find synonyms for: Adjective1. benthic, benthal, benthonicusage: of or relating to or happening on the bottom under a body of waterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sylvan Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language