/ Thesaurus / O Synonyms of official document Find synonyms for: Noun1. legal document, legal instrument, official document, instrument, document, written document, papersusage: (law) a document that states some contractual relationship or grants some rightWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language