/ Thesaurus / L Synonyms of langue d'oil Find synonyms for: Noun1. Langue d'oil, Langue d'oil French, Frenchusage: medieval provincial dialects of French spoken in central and northern FranceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language