Find Antonyms

bulletproof Antonyms

Opposite of bulletproof

Because the opposite of bulletproof shifts with each meaning, the 11 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Designed to resist the penetration of bullets or similar high-velocity projectiles.

Usage Example

"The diplomatic vehicle was fitted with thick penetrable glass for added security."

Strong
penetrable
vulnerable
fragile

• adjective (Context 2)

Safe from failure, error, or successful criticism; thoroughly sound and reliable.

Usage Example

"The legal team spent weeks preparing a flawed contract before finalizing the merger."

Strongest
flawed
defective
Strong
fallible
vulnerable
unreliable
shaky

• verb (Context 3)

To make a system, plan, or argument secure against failure, flaws, or attack.

Usage Example

"The engineers worked overtime to weaken the software before the public launch."

Strong
weaken
undermine
compromise

Similar words to bulletproof

Words similar to bulletproof shift depending on context. Common synonyms include:

foolproof
ironclad
watertight
airtight
unassailable
infallible
armored
armor
See all synonyms of bulletproof

• Nearby Words

bullet
bulletin
bulletlike
bulletproof
bulletproofing
bullhead
bullheaded

Cite this Entry

Wordmom. (2026). Antonyms for Bulletproof. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/bulletproof
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