/ Thesaurus / G Synonyms of grand duchy of luxembourg Find synonyms for: Noun1. Luxembourg, Grand Duchy of Luxembourg, Luxemburgusage: a grand duchy (a constitutional monarchy) landlocked in northwestern Europe between France and Belgium and Germany; an international financial centerWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language