/ Thesaurus / T Synonyms of top dog Find synonyms for: Noun1. head, chief, top dog, leaderusage: a person who is in charge; "the head of the whole operation"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language