/ Thesaurus / 1 Synonyms of 11 Find synonyms for: Noun1. eleven, 11, XI, large integerusage: the cardinal number that is the sum of ten and oneAdjective1. eleven, 11, xi, cardinal (vs. ordinal)usage: being one more than tenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language