/ Thesaurus / P Synonyms of plump out Find synonyms for: Verb1. plump out, depart, take leave, quitusage: depart suddenly; "He plumped out of the house"2. fatten, fat, flesh out, fill out, plump, plump out, fatten out, fatten up, change, alter, modifyusage: make fat or plump; "We will plump out that poor starving child"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language