different between bulletproof vs impervious

English

Alternative forms

• bullet-proof

Etymology

bullet +? -proof

Pronunciation

• IPA^(key): /b?l.?tp?u?f/
• Hyphenation: bul?let?proof

Adjective

bulletproof (comparative more bulletproof, superlative most bulletproof)

1. (of a material) Capable of withstanding a direct shot by a bullet fired from a gun.

   A bulletproof window.

   A bulletproof vest.

2. (idiomatic) Reliable, infallible, sturdy or error-tolerant.
3. (usually of an idea or concept) Unbreakable, very tough.

Synonyms

• (infallible): foolproof

Derived terms

• bulletproof hosting
• bulletproof host
• bulletproof vest

Translations

Verb

bulletproof (third-person singular simple present bulletproofs, present participle bulletproofing, simple past and past participle bulletproofed)

1. To make proof against bullets.
2. (slang) to make resistant to failure.

   We have to bulletproof this program before we let the users at it; check every input, catch every possible flaw...it must not fail in use.

English

Etymology

From Latin impervius (“that cannot be passed through”), from in- (“not”) + pervius (“letting things through”)

Pronunciation

• (Received Pronunciation) IPA^(key): /?m?p??vi.?s/
• (General American) IPA^(key): /?m?p?.vi.?s/
• Rhymes: -??(r)vi?s

Adjective

impervious (comparative more impervious, superlative most impervious)

1. Unaffected or unable to be affected by something.
2. Preventive of any penetration; impenetrable, impermeable, particularly of water.

3. Immune to damage or effect.

Antonyms

• pervious

Derived terms

• imperviously
• imperviousness

Translations