Breadcrumb Home > Thesaurus > P Synonyms of pinniped Find synonyms for: Noun1. pinniped mammal, pinniped, pinnatiped, aquatic mammalusage: aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of pinniped (Dictionary) ✖ Related Content Daily Word Quiz: tautology Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language