bulletproof

[bool-it-proof] / ˈbʊl ɪtˌpruf /

ADJECTIVE

armored

Synonyms

STRONG

protected shielded

WEAK

indestructible invulnerable ironclad steel-plated strong unbreakable

Antonyms

WEAK

breakable unarmored unprotected weak

ADJECTIVE

impenetrable

Synonyms

STRONGEST

impassable impervious

WEAK

close compact firm hard hermetic impermeable inviolable solid substantial thick unpiercable

Antonyms

STRONGEST

open

WEAK

clear comprehensible intelligible penetrable permeable porous soft thin understandable

ADJECTIVE

invincible

Synonyms

STRONGEST

impassable impregnable indomitable invulnerable irresistible unassailable unbeatable untouchable

WEAK

insuperable inviolable powerful strong unattackable unconquerable undefeatable unsurmountable unyielding

Antonyms

STRONGEST

beatable

WEAK

breakable conquerable destructible

ADJECTIVE

invulnerable

Synonyms

STRONGEST

impassable impenetrable impregnable indestructible unbeatable untouchable

WEAK

powerful secure strong

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If so, then you might want to rethink, because then you become increasingly less bulletproof.

From MarketWatch • Jun. 3, 2026

Last week, de la Espriella appeared at a rally in Medellin behind bulletproof glass.

From BBC • May 30, 2026

With its bulletproof reputation, the software has spread to factory floors and other workplaces that value safety, precision and tech that won’t glitch.

From The Wall Street Journal • May 2, 2026

"Everything's drone proof and bulletproof," an animated Trump said of the ballroom.

From Barron's • Mar. 31, 2026

I tell her about how Rue’s family is considering installing bulletproof windows.

From "Split the Sky" by Marie Arnold

bulletproof

Example Sentences

Related Words