bulletproof
Americanadjective
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(of vehicles, glass, clothing, etc.) capable of resisting or absorbing the impact of a bullet.
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Informal. safe from failure; without errors or shortcomings and beyond criticism.
a bulletproof system; a bulletproof budget.
verb (used with object)
adjective
verb
Etymology
Origin of bulletproof
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
You want people who will bulletproof your strategy before reality does.
From MarketWatch • May 6, 2026
With its bulletproof reputation, the software has spread to factory floors and other workplaces that value safety, precision and tech that won’t glitch.
From The Wall Street Journal • May 2, 2026
The president and other top officials have said a Secret Service officer was shot as the attacker charged a security checkpoint at the hotel, and that he survived thanks to a bulletproof vest.
From BBC • May 1, 2026
US President Donald Trump said Thursday he wasn't keen on wearing a bulletproof vest despite multiple alleged assassination attempts -- as he is worried it may make him look fat.
From Barron's • Apr. 30, 2026
He and Chris ram their shoulders against it, but it’s bulletproof, shoulder-proof, everything-proof.
From "The Hate U Give" by Angie Thomas
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
