from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Impervious to or unaffected by water.
  • adj. Made of or coated or treated with rubber, plastic, or a sealing agent to prevent penetration by water.
  • n. A material or fabric that is impervious to water.
  • n. Chiefly British A raincoat or other such outer garment.
  • transitive v. To make impervious to water.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Unaffected by water.
  • adj. Made of or covered with material that doesn't allow water in.
  • v. To make waterproof or water-resistant.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Proof against penetration or permeation by water; impervious to water.
  • n. A substance or preparation for rendering cloth, leather, etc., impervious to water.
  • n. Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; esp., an outer garment made of such material.
  • transitive v. To render impervious to water, as cloth, leather, etc.

from The Century Dictionary and Cyclopedia

  • Impervious to water, or nearly so
  • n. Any material which repels water; especially, a light woolen cloth made for the purpose, and subjected to some waterproofing application.
  • n. A garment of some material that repels water, made either of waterproof , or of mackintosh or a similar material made with india-rubber.
  • To render impervious to water, as cloth, leather, etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a water-resistant coat
  • adj. not permitting the passage of water
  • n. any fabric impervious to water
  • v. make watertight


water +‎ -proof (Wiktionary)



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