Proof
Proof adjective - (used in combination or as a suffix) able to withstand.
Waterproof and proof are semantically related. In some cases you can use "Waterproof" instead the word "Proof" as an adjective or a verb.
Waterproof
Waterproof adjective - Made of or treated with material that does not allow water to penetrate.
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Synonyms for Waterproof
Proof and waterproof are semantically related. Sometimes you can use "Proof" instead the word "Waterproof" as a verb or an adjective.
Nearby Words: waterproofed, waterproofing
Mutual synonyms
Both words in one sentence
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In the Richie Rich movie, one of Professor Keenbean's inventions is a spray that makes clothes bulletproof (not to mention stain-proof and waterproof).
Source: Bullet Proof Vest -
Not only is Sawtooth waterproof, he's also lightning-proof (he considers pies-in-the-face to be funnier than lightning strikes though).
Source: No Waterproofing in the Future -
In Trading Places, Louis Winthorpe tries to sell his watch at a pawnshop, mentioning how it's waterproof up to 3 atmospheres as proof of how top-of-the-line it is.
Source: Technology Marches On
Cite this Source
Waterproof and Proof. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/proof/waterproof
Proof & Waterproof. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/proof/waterproof>.
Waterproof or Proof. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/proof/waterproof.
Google Ngram Viewer shows how "proof" and "waterproof" have occurred on timeline