/ Thesaurus / R Synonyms of river boat Find synonyms for: Noun1. river boat, boatusage: a boat used on rivers or to ply a riverWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language