/ Thesaurus / I Synonyms of ivan iii Find synonyms for: Noun1. Ivan III, Ivan III Vasilievich, Ivan the Greatusage: grand duke of Muscovy whose victories against the Tartars laid the basis for Russian unity (1440-1505)WordNet 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