/ Thesaurus / P Synonyms of prognathic Find synonyms for: Adjective1. prognathous (vs. opisthognathous), prognathic, hypognathous, lantern-jawedusage: having a projecting lower jawWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language