/ Thesaurus / D Synonyms of double u Find synonyms for: Noun1. W, w, double-u, letter, letter of the alphabet, alphabetic characterusage: the 23rd letter of the Roman alphabetWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language