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
Gmail versus the rest Statista But Gmail (and other) security restrictions are not bulletproof — far from it.
—
Zak Doffman, Forbes.com, 30 Mar. 2025
All that said, there are no platforms that are bulletproof for sharing secrets.
—Zak Doffman, Forbes, 25 Mar. 2025
Reporters, family members of Sigmon's victims and his lawyer will view the execution inside the same building used for all executions over the past 35 years, although prison officials say the glass separating the witness room from the death chamber is now bulletproof.
—CBS News, 4 Mar. 2025
Both efforts represent scientific achievements, but bulletproof evidence of a topological quantum bit is elusive.
—IEEE Spectrum, 19 Mar. 2025
See All Example Sentences for bulletproof
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Zak Doffman, Forbes.com, 30 Mar. 2025
All that said, there are no platforms that are bulletproof for sharing secrets.
—Zak Doffman, Forbes, 25 Mar. 2025
Reporters, family members of Sigmon's victims and his lawyer will view the execution inside the same building used for all executions over the past 35 years, although prison officials say the glass separating the witness room from the death chamber is now bulletproof.
—CBS News, 4 Mar. 2025
Both efforts represent scientific achievements, but bulletproof evidence of a topological quantum bit is elusive.
—IEEE Spectrum, 19 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 12 Apr. 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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