bulletproof

bul·let·proof
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UK/ˈbʊlɪtpɹuːf/British, Southern, Standard/ˈbɵlɪtpɹʉwf/US/ˈbʊlɪtpɹuf/Australia, New Zealand/ˈbʊlɪtpɹʉːf/

adjective

Capable of withstanding a direct shot by a bullet fired from a gun.

“bulletproof vest”

Less commonScrabble 18

Meanings

adjectivebulletproof (comparative more bulletproof, superlative most bulletproof)

comparative more bulletproof · superlative most bulletproof · alternative bullet-proof

  1. Capable of withstanding a direct shot by a bullet fired from a gun.

    bulletproof vest

    3 more examples

    bulletproof window

    bulletproof car.

    YouTube is awash in gun content, often referred to as “GunTube” by firearm enthusiasts. Individuals who come to GunTube—including children and teens—can find videos which glorify assault weapons, show how to modify firearms, and teach viewers how to shoot through bulletproof glass or “win gunfights.”

    2023 May 16, “YouTube and Gun Content: A Dangerous Combination for Kids and Teens”, in Everytown Support Fund
  2. figurativelyReliable, infallible, sturdy or error-tolerant.

    bulletproof hosting

    2 more examples

    The packed opening night of Twain’s first UK tour since 2004 is an impressively barnstorming, thigh-slapping, eye-searing revue that marries her bulletproof back catalogue with a cautious sprinkle of new material.

    2018 September 20, Graeme Virtue, “Shania Twain review – barnstorming, thigh-slapping spectacular”, in The Guardian

    But what tone indicators lack in artfulness, they make up for in their bulletproof inability to be misinterpreted.

    2020 December 9, Ezra Marcus, “Tone Is Hard to Grasp Online. Can Tone Indicators Help?”, in The New York Times, archived from the original on 04 Jul 2021

    Synonyms: foolproof

verbbulletproof (third-person singular simple present bulletproofs, present participle bulletproofing, simple past and past participle bulletproofed)

present singular third person bulletproofs · participle present bulletproofing · participle past bulletproofed · past bulletproofed · alternative bullet-proof

  1. transitiveTo make proof against bullets.
  2. informaltransitiveTo make resistant to failure.

    We have to bulletproof this program before we let the users at it; check every input, catch every possible flaw... it must not fail in use.

nounbulletproof (plural bulletproofs)

plural bulletproofs · alternative bullet-proof

  1. slangA liquor store

    I converted it to a mini-bar and then I went to every single bulletproof in my neighborhood and ordered a ridiculous amount.

    2024 February 28, André Mack, Sommelier Tries Every Costco Liquor | World Of Wine | Bon Appétit

Synonyms & antonyms

adjectiveReliable, infallible, sturdy or error-tolerant.

Similar

More synonyms by meaning

adjectivenot penetrable by bullets

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Englishbullet
  2. Englishproof
  3. Englishbulletproof

From bullet + -proof.

Full word history & related roots →

Translations

Afrikaans koeëlvas
  • koeëlvascapable of withstanding a bullet
Catalan antibales, a prova de bales
  • antibalescapable of withstanding a bullet
  • a prova de balescapable of withstanding a bullet
  • infal·liblereliable, infallible
Chinese Mandarin 防彈 /防弹
  • 防彈 /防弹 (fángdàn)capable of withstanding a bullet
Czech neprůstřelný
  • neprůstřelnýcapable of withstanding a bullet
Danish skudsikker
  • skudsikkercapable of withstanding a bullet
Dutch kogelvrij
  • kogelvrijcapable of withstanding a bullet
Finnish luodinkestävä, pomminvarma
  • luodinkestäväcapable of withstanding a bullet
  • pomminvarmareliable, infallible
French pare-balle, blindé
  • pare-ballecapable of withstanding a bullet
  • blindécapable of withstanding a bullet
  • à toute épreuvereliable, infallible
  • inattaquablereliable, infallible
  • infailliblereliable, infallible
German kugelsicher, schusssicher
  • kugelsichercapable of withstanding a bullet
  • schusssichercapable of withstanding a bullet
  • schussfestcapable of withstanding a bullet
  • wasserdichtreliable, infallible
Greek αλεξίσφαιρος
  • αλεξίσφαιρος (alexísfairos)capable of withstanding a bullet
Hungarian golyóálló
  • golyóállócapable of withstanding a bullet
Indonesian tahan peluru, antipeluru
  • tahan pelurucapable of withstanding a bullet
  • antipelurucapable of withstanding a bullet
Italian antiproiettile
  • antiproiettilecapable of withstanding a bullet
Japanese 防弾
  • 防弾 (bōdan)capable of withstanding a bullet
Korean 방탄의
  • 방탄의 (bangtanui)capable of withstanding a bullet
Malay kalis peluru
  • kalis pelurucapable of withstanding a bullet
Norwegian Bokmål skuddsikker
  • skuddsikkercapable of withstanding a bullet
Polish kuloodporny
  • kuloodpornycapable of withstanding a bullet
Portuguese à prova de balas, antibalas
  • à prova de balascapable of withstanding a bullet
  • antibalascapable of withstanding a bullet
Romanian antiglonț
  • antiglonțcapable of withstanding a bullet
Russian пуленепробива́емый
  • пуленепробива́емый (puleneprobivájemyj)capable of withstanding a bullet
Slovak nepriestrelný
  • nepriestrelnýcapable of withstanding a bullet
Spanish antibalas, a prueba de balas
  • antibalascapable of withstanding a bullet
  • a prueba de balascapable of withstanding a bullet
  • blindadocapable of withstanding a bullet
  • infaliblereliable, infallible
Swedish skottsäker
  • skottsäkercapable of withstanding a bullet
Thai กันกระสุน
  • กันกระสุน (gan-grà-sǔn)capable of withstanding a bullet
Turkish kurşun geçirmez
  • kurşun geçirmezcapable of withstanding a bullet
Ukrainian куленепробивни́й
  • куленепробивни́й (kuleneprobyvnýj)capable of withstanding a bullet
Cite this entry
APA

bulletproof. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/bulletproof

MLA

“bulletproof.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/bulletproof. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “bulletproof,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/bulletproof.

Source: bulletproof on Wiktionary, CC BY-SA 4.0.