Breadcrumb Home > Thesaurus > W Synonyms of watchdog Find synonyms for: Noun1. watchdog, defender, guardian, protector, shielderusage: a guardian or defender against theft or illegal practices or waste; "she is the global watchdog for human rights abuses"2. watchdog, guard dog, working dogusage: a dog trained to guard propertyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of watchdog (Dictionary) ✖ Related Content Daily Word Quiz: taradiddle Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language