/ Thesaurus / W Synonyms of william iv Find synonyms for: Noun1. William IV, Sailor Kingusage: King of England and Ireland; son of George III who ascended the throne after a long naval career (1765-1837)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language