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.
US Supreme Court justices told Congress on Tuesday that escalating threats have forced them to confront dangers once unthinkable for the nation's top judges -- including explaining bulletproof vests to their children.
From Barron's ● Jul. 14, 2026
Regan told some prospective clients that his investments had “zero risk” and likened the purported insurance to “a bulletproof vest that you can wake up with and go to sleep with.”
From The Wall Street Journal ● Jun. 29, 2026
He has often addressed crowds behind bulletproof glass screens.
From BBC ● Jun. 22, 2026
I have a bulletproof portfolio that is 100% in large-cap U.S. stocks and I live off the dividend income.
From MarketWatch ● Jun. 3, 2026
It was preordained, a bulletproof future they’d tricked themselves into believing was guaranteed to them.
From "We'll Fly Away" by Bryan Bliss
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.
