/ Thesaurus / S Synonyms of ship money Find synonyms for: Noun1. ship money, customs, customs duty, custom, impostusage: an impost levied in England to provide money for ships for national defenseWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language