
Bulletproof
Physical Protection
Refers to actual items that provide safety from physical threats like gunfire.

The security guard wore a bulletproof vest.
High Durability
Suggests very strong materials or structures, not just standard ones.

The bank installed bulletproof windows.
Not Absolute
While strong, it doesn't mean indestructible; high-caliber rounds can be an exception.

The door was virtually bulletproof.
Compare with
ArmourDurableIndestructibleResilientRuggedStrongToughUnbreakable
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