/ Thesaurus / W Synonyms of waterproofed Find synonyms for: Verb1. waterproof, seal, seal offusage: make watertight; "Waterproof the coat"Adjective1. rainproof, waterproof, waterproofed, tight (vs. leaky)usage: not permitting the passage of waterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language