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
Examples of bulletproof in a Sentence
The car has bulletproof windows.
The police officer was wearing a bulletproof vest.
Recent Examples on the Web
Read on to find out more about bulletproof coffee and if the wellness claims surrounding it are actually true.
—
Alessandra Signorelli, Vogue, 30 Apr. 2025
From bulletproof glass to panic buttons, jurisdictions across the U.S. are taking unprecedented steps to protect election workers and ballots amid concerns about voter intimidation, fraud and even violence at the polls.
—Sophia Cai, Axios, 20 Sep. 2024
The feds alleged that the pair procured over $1 million worth of luxury items — including a bulletproof Escalade, a giant TV, and expensive watches — without ever paying for them.
—Jon Blistein, Rolling Stone, 15 Apr. 2025
Gmail versus the rest Statista But Gmail (and other) security restrictions are not bulletproof — far from it.
—Zak Doffman, Forbes.com, 30 Mar. 2025
See All Example Sentences for bulletproof
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Alessandra Signorelli, Vogue, 30 Apr. 2025
From bulletproof glass to panic buttons, jurisdictions across the U.S. are taking unprecedented steps to protect election workers and ballots amid concerns about voter intimidation, fraud and even violence at the polls.
—Sophia Cai, Axios, 20 Sep. 2024
The feds alleged that the pair procured over $1 million worth of luxury items — including a bulletproof Escalade, a giant TV, and expensive watches — without ever paying for them.
—Jon Blistein, Rolling Stone, 15 Apr. 2025
Gmail versus the rest Statista But Gmail (and other) security restrictions are not bulletproof — far from it.
—Zak Doffman, Forbes.com, 30 Mar. 2025
See All Example Sentences for bulletproof
Cite this Entry
“Bulletproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bulletproof. Accessed 19 Aug. 2025.
Copy CitationKids Definition
bulletproof
adjective
bul·let·proof
ˈbül-ət-ˌprüf
: so made as to prevent the passing through of bullets
bulletproof glass
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