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.
McArthur said the result was a "bulletproof" bill which amounted to "the toughest and most comprehensively-safeguarded" such legislation in the world.
From BBC • Mar. 16, 2026
Now a new documentary about the Bigfoot film—which many believers still defend as bulletproof evidence—reveals its legacy to be surprisingly raw.
From The Wall Street Journal • Mar. 12, 2026
It is also beginning the process of using other laws to impose more legally bulletproof levies.
From The Wall Street Journal • Feb. 23, 2026
Its debt is rated double-B, but the coverage ratio is bulletproof.
From Barron's • Jan. 23, 2026
“It’s a request from a guy named Carl Abeyta in the Chamisa County Milagro district headquarters for a bunch of bulletproof vests. Now what the hell do I do with a thing like this?”
From "The Milagro Beanfield War" by John Nichols
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.
