bul·​let·​proof | \ ˈbu̇-lət-ˌprüf How to pronounce bulletproof (audio) also ˈbə- \

Definition of bulletproof

1 : impenetrable to bullets bulletproof glass
2 : not subject to correction, alteration, or modification a bulletproof argument

Examples of bulletproof in a Sentence

The car has bulletproof windows. The police officer was wearing a bulletproof vest.
Recent Examples on the Web Ukraine has raised more than $54 million from Bitcoin donations, $15 million of which have been spent on military supplies such as bulletproof vests. Amiah Taylor, Fortune, 7 Mar. 2022 Even the most advanced technologies are never bulletproof. Sean Mcdermott, Forbes, 18 Jan. 2022 Republicans have nearly bulletproof gerrymanders of legislatures in swing states like Wisconsin, Michigan, Georgia, and Arizona. Ryan Cooper, The Week, 11 Jan. 2022 Overall, the benefits are huge, but no fix is completely bulletproof. Chris Nicoli, Forbes, 21 Oct. 2021 Lawmakers already can get reimbursement for buying protective equipment such as bulletproof vests. Washington Post, 16 Oct. 2021 While highly effective at preventing severe illness and death, the shots are not bulletproof. oregonlive, 29 Sep. 2021 Vaccines are not bulletproof, but those who do get infected tend not to be critically ill. Cindy Krischer Goodman, sun-sentinel.com, 30 July 2021 The source, who demanded anonymity to speak freely, said that Intriago is also known for providing firearms, firearms parts, and military and police equipment such as bulletproof vests. Anchorage Daily News, 11 July 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bulletproof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of bulletproof

1693, in the meaning defined at sense 1

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Time Traveler for bulletproof

Time Traveler

The first known use of bulletproof was in 1693

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Dictionary Entries Near bulletproof

bullet point


bullet train

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Statistics for bulletproof

Cite this Entry

“Bulletproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bulletproof. Accessed 27 Jun. 2022.

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More Definitions for bulletproof


bul·​let·​proof | \ ˈbu̇-lət-ˌprüf How to pronounce bulletproof (audio) \

Kids Definition of bulletproof

: made to stop bullets from going through

More from Merriam-Webster on bulletproof

Nglish: Translation of bulletproof for Spanish Speakers

Britannica English: Translation of bulletproof for Arabic Speakers


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