Definition of Bulletproof:

  1. Literally, unable to be destroyed by the impact of a fired bullet.

  2. Informally, something that is perfect or without failures. His reasoning for why he deserved a raise was bulletproof, hence I gave him a raise on the spot. Our boss told us that if we did not put together a bulletproof proposal for the important client, we would be removed from the project as a result of our failure..

  3. Designed to resist the penetration of bullets.

Synonyms of Bulletproof

Resistant, Impenetrable, Impervious, Repellent

How to use Bulletproof in a sentence?

  1. A bulletproof vest.

Meaning of Bulletproof & Bulletproof Definition