/ Thesaurus / I Synonyms of in league Find synonyms for: Adjective1. in league(predicate), united (vs. divided)usage: (usually followed by `with') united in effort as if in a league; "they found out that some policemen were in league with the criminals"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language