/ Thesaurus / F Synonyms of fleet admiral Find synonyms for: Noun1. fleet admiral, five-star admiral, flag officerusage: an admiral of the highest rankWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: mongrel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language