/ Thesaurus / R Synonyms of rain out Find synonyms for: Verb1. rain out, wash out, prevent, keepusage: prevent or interrupt due to rain; "The storm had washed out the game"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language