Definitions

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.

You want people who will bulletproof your strategy before reality does.

From MarketWatch • May 6, 2026

Although best known for its use in military helmets and bulletproof vests as well as tires and other industrial equipment, Kevlar is also used to make many household goods.

From The Wall Street Journal • Apr. 9, 2026

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

From Barron's • Mar. 31, 2026

McArthur said the result was a "bulletproof" bill which amounted to "the toughest and most comprehensively-safeguarded" such legislation in the world.

From BBC • Mar. 16, 2026

I took in the spectacle: thousands and thousands of pounds of metal, a squad of commandos, bulletproof everything.

From "Becoming" by Michelle Obama

bulletproof

Example Sentences

Related Words