/ Thesaurus / G Synonyms of genus mastodon Find synonyms for: Noun1. Mammut, genus Mammut, genus Mastodon, mammal genususage: extinct type genus of the Mammutidae: mastodonsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: placate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language