Bulletproof

Bulletproof refers to the quality of being highly resistant to damage or penetration, typically by bullets or other high-impact forces. Originally used in military and law enforcement contexts to describe armor plating or protective gear, the term is now also applied metaphorically to products, systems, or strategies designed to be extremely secure, reliable, or resilient against threats or failures. In essence, "bulletproof" signifies a level of protection or robustness that minimizes the risk of harm, breach, or collapse, ensuring safety and integrity even under significant stress or attack.