/ Thesaurus / P Synonyms of plantigrade mammal Find synonyms for: Noun1. plantigrade mammal, plantigrade, placental, placental mammal, eutherian, eutherian mammalusage: an animal that walks with the entire sole of the foot touching the ground as e.g. bears and human beingsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language