/ Thesaurus / C Synonyms of commander in chief Find synonyms for: Noun1. commander in chief, generalissimo, commanding officer, commandant, commanderusage: the officer who holds the supreme command; "in the U.S. the president is the commander in chief"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language