Waterproof vs Watertight - What's the difference?

waterproof | watertight |

As adjectives the difference between waterproof and watertight

is that waterproof is unaffected by water while watertight is so tightly made that water cannot enter or escape.

As a verb waterproof

is to make waterproof or water-resistant.

As a noun waterproof

is a substance or preparation for rendering cloth, leather, etc, impervious to water.



(en adjective)
  • Unaffected by water.
  • Made of or covered with material that doesn't allow water in.
  • Incapable of failing; unassailable.
  • * 1931 , The British Clay Worker
  • The only waterproof plan and the one increasingly adopted by leading trades is the consolidation of the interests of all parties in a scheme of amalgamation.
  • * 2001 , W. A. M. van Dijk, J. L. Hovens, Netherlands. Koninklijke Marechaussee, Arresting war criminals
  • Especially within an international framework, guarding this process is of the utmost importance. The eyes of the world are focussed on the action at hand and demand a waterproof plan and execution.
  • * 2013 , Barry Davies, Soldier of Fortune Guide to How to Disappear and Never Be Found , Skyhorse Publishing, Inc. (ISBN 9781626365216)
  • Unless you have a 100 percent waterproof plan to defraud insurance companies, I would suggest you don&
  • 39;t do it.
  • See also

    * watertight


    (en verb)
  • To make waterproof or water-resistant.
  • * {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)
  • , title= Yesterday’s fuel , passage=The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania. The first barrels of crude fetched $18 (around $450 at today’s prices).}}


    (en noun)
  • A substance or preparation for rendering cloth, leather, etc., impervious to water.
  • Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; especially, an outer garment made of such material.
  • ----




    (en adjective)
  • So tightly made that water cannot enter or escape.
  • So devised or planned as to be impossible to defeat, evade or nullify.
  • a watertight''' contract; a '''watertight regulation.

    Derived terms

    * watertight alibi * watertightness

    See also

    * airtight * waterproof