/ Thesaurus / P Synonyms of pentagon gang Find synonyms for: Noun1. Pentagon Gangusage: a Filipino terrorist group that broke away from the Moro Islamic Liberation Front in 2001 in order to continue terrorism and kidnapping and extortionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language