/ Thesaurus / P Synonyms of pro bono Find synonyms for: Adjective1. pro bono, unpaid (vs. paid)usage: done for the public good without compensationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language