Synonyms: bulletproof
Definition: make bulletproof
Usage: bulletproof the car
Similar words: proof
Definition: make resistant (to harm)
Usage: proof the materials against shrinking in the dryer
Synonyms: bulletproof
Definition: not penetrable by bullets
Usage: bulletproof glass; bulletproof vest
Synonyms: unassailable, bulletproof, unshakable, watertight
Definition: without flaws or loopholes
Usage: an ironclad contract; a watertight alibi; a bulletproof argument
Similar words: incontestable, incontestible
Definition: incapable of being contested or disputed