bulletproof

Capable of withstanding a direct shot by a bullet fired from a gun.

bulletproof window

bulletproof vest

Reliable, infallible, sturdy or error-tolerant.

bulletproof hosting

The packed opening night of Twain’s first UK tour since 2004 is an impressively barnstorming, thigh-slapping, eye-searing revue that marries her bulletproof back catalogue with a cautious sprinkle of new material.

To make proof against bullets.

To make resistant to failure.

We have to bulletproof this program before we let the users at it; check every input, catch every possible flaw... it must not fail in use.

A liquor store

I converted it to a mini-bar and then I went to every single bulletproof in my neighborhood and ordered a ridiculous amount.