/ Thesaurus / P Synonyms of pep up Find synonyms for: Verb1. cheer, root on, inspire, urge, barrack, urge on, exhort, pep up, encourageusage: spur on or encourage especially by cheers and shouts; "The crowd cheered the demonstrating strikers"2. jazz up, juice up, pep up, ginger up, enliven, liven, liven up, invigorate, animateusage: make more interesting or lively; "juice up a party"; "pep up your paper"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: bibliophile Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language