Bulletproof
Bulletproof verb - Make bulletproof.
Usage example: bulletproof the car
Proof and bulletproof are semantically related In some cases you can use "Proof" instead the word "Bulletproof" as a verb or an adjective.
Proof
Proof verb - Read for errors.
Bulletproof and proof are semantically related in waterproof topic. Sometimes you can use "Bulletproof" instead an adjective "Proof".
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 - Later on there's a bit of discussion about the difference between "bulletproof" and "knife proof" vests.
Source: Bullet Proof Vest -
And yet Fallout 3, which uses the same engine, has bulletproof (also laserproof and explosion-proof) chairs.
Source: Die, Chair! Die!
Cite this Source
Proof and Bulletproof. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/bulletproof/proof
Bulletproof & Proof. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/bulletproof/proof>.
Proof or Bulletproof. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/bulletproof/proof.
Google Ngram Viewer shows how "bulletproof" and "proof" have occurred on timeline