/ Thesaurus / C Synonyms of chirk up Find synonyms for: Verb1. cheer, cheer up, chirk up, rejoice, joyusage: become cheerfulWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language