bulletproof

American  

[bool-it-proof] / ˈbʊl ɪtˌpruf /

adjective

1. (of vehicles, glass, clothing, etc.) capable of resisting or absorbing the impact of a bullet.

2. Informal. safe from failure; without errors or shortcomings and beyond criticism.

   a bulletproof system; a bulletproof budget.

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verb (used with object)

1. to make (something) bulletproof.

bulletproof British  

/ ˈbʊlɪtˌpruːf /

adjective

1. not penetrable by bullets

   bulletproof glass

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verb

1. (tr) to make bulletproof

Etymology

Origin of bulletproof

First recorded in 1855–60; bullet + -proof

Example Sentences

ICE officers are wearing bulletproof vests and carrying weapons at more than a dozen airports around the country.

From Salon

The next round number could be reached in record time, and the bond market may no longer look bulletproof when the smoke clears.

From The Wall Street Journal

The group’s name is short for their Korean name, Bangtan Sonyeondan, which means bulletproof boy scouts, and is altered in English to “Beyond the Scene.”

From The Wall Street Journal

McArthur said the result was a "bulletproof" bill which amounted to "the toughest and most comprehensively-safeguarded" such legislation in the world.

From BBC

A bulletproof train, Kim’s preferred mode of transport, went to Beijing and back to Pyongyang last September, with his young daughter and top North Korean officials in tow.

From The Wall Street Journal

Related Words

• impassable
• impregnable
• indomitable
• invulnerable
• irresistible
• unassailable
• unbeatable
• untouchable