bulletproof
adjective
bul·let·proof
ˈbu̇-lət-ˌprüf 
also ˈbə-
1
: impenetrable to bullets
bulletproof glass
2
: not subject to correction, alteration, or modification
a bulletproof argument
3
Synonyms
Examples of bulletproof in a Sentence
The car has bulletproof windows.
The police officer was wearing a bulletproof vest.
Recent Examples on the Web
Located some ten miles southwest of Huffman Prairie, McCook Field, dedicated during World War I, was the site of numerous aviation developments: new aircraft, free-fall parachutes, bulletproof gas tanks, controllable-pitch propellers and night-vision cameras.
—
Leo Deluca, Smithsonian Magazine, 19 Sep. 2023
These trees are pest-resistant but are not bulletproof.
—Southern Living Editors, Southern Living, 10 Sep. 2023
The sheriff said investigators later discovered a TikTok video of the suspect at the college putting on his bulletproof tactical vest.
—Bill Hutchinson, ABC News, 27 Aug. 2023
Candidates wore bulletproof vests on election day while security forces were stationed outside polling stations amid threats of violence.
—Tara John, CNN, 20 Aug. 2023
The interior of the Houston boutique, on Cullen Boulevard in the muggy maw of Southeast Texas, was encased in bulletproof plastic.
—August Brown, Los Angeles Times, 7 Aug. 2023
While Nietzsche’s Übermensch was an embodiment of religious rejection, a being who transcended the mores of the Christian church, the character of Superman nodded to generations of human advancement, with abilities including bulletproof skin and laser-beaming eyes.
—Rachel Shin, Fortune, 13 Aug. 2023
The company was co-founded by Chou's mother, and makes bulletproof coffee, a type of high-fat, low-carb drink.
—Dave Sebastian, WSJ, 13 July 2023
When combined with forward-thinking concepts and traditional, albeit dazzling, designs alike — as well as a luxury sector that remains simply bulletproof — the result in Paris last week was a span of high-jewelry presentations that far exceeded press and client expectations alike.
—Laurie Brookins, The Hollywood Reporter, 11 July 2023
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Leo Deluca, Smithsonian Magazine, 19 Sep. 2023
These trees are pest-resistant but are not bulletproof.
—Southern Living Editors, Southern Living, 10 Sep. 2023
The sheriff said investigators later discovered a TikTok video of the suspect at the college putting on his bulletproof tactical vest.
—Bill Hutchinson, ABC News, 27 Aug. 2023
Candidates wore bulletproof vests on election day while security forces were stationed outside polling stations amid threats of violence.
—Tara John, CNN, 20 Aug. 2023
The interior of the Houston boutique, on Cullen Boulevard in the muggy maw of Southeast Texas, was encased in bulletproof plastic.
—August Brown, Los Angeles Times, 7 Aug. 2023
While Nietzsche’s Übermensch was an embodiment of religious rejection, a being who transcended the mores of the Christian church, the character of Superman nodded to generations of human advancement, with abilities including bulletproof skin and laser-beaming eyes.
—Rachel Shin, Fortune, 13 Aug. 2023
The company was co-founded by Chou's mother, and makes bulletproof coffee, a type of high-fat, low-carb drink.
—Dave Sebastian, WSJ, 13 July 2023
When combined with forward-thinking concepts and traditional, albeit dazzling, designs alike — as well as a luxury sector that remains simply bulletproof — the result in Paris last week was a span of high-jewelry presentations that far exceeded press and client expectations alike.
—Laurie Brookins, The Hollywood Reporter, 11 July 2023
See More
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'bulletproof.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1693, in the meaning defined at sense 1
Articles Related to bulletproof
Dictionary Entries Near bulletproof
Cite this Entry
“Bulletproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bulletproof. Accessed 4 Oct. 2023.
Copy Citation
Kids Definition
bulletproof
adjective
bul·let·proof
ˈbül-ət-ˌprüf
: so made as to prevent the passing through of bullets
bulletproof glass
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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