/ Thesaurus / I Synonyms of iron duke Find synonyms for: Noun1. Wellington, Duke of Wellington, First Duke of Wellington, Arthur Wellesley, Iron Dukeusage: British general and statesman; he defeated Napoleon at Waterloo; subsequently served as Prime Minister (1769-1852)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language