/ Thesaurus / R Synonyms of rain cats and dogs Find synonyms for: Verb1. pour, pelt, stream, rain cats and dogs, rain buckets, rain, rain downusage: rain heavily; "Put on your rain coat-- it's pouring outside!"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dispel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language