BULLETPROOF Synonyms: 44 Similar and Opposite Words

bulletproof

adjective

ˈbu̇-lət-ˌprüf

Definition of bulletproof

as in invincible

incapable of being defeated, overcome, or subdued this year the coach's strategy seems bulletproof

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of bulletproof Besides abstaining from booze, scientists also don’t have a bulletproof way to prevent hangovers. — Lauren J. Young, Scientific American, 17 Mar. 2026 No offshore trust or jurisdiction is completely bulletproof. — Adam Fayed, Forbes.com, 12 Mar. 2026 Warsh's theory of inflation is designed to make an essentially bulletproof case for cuts in this economy, unless something changes drastically. — Matt Peterson, CNBC, 5 Mar. 2026 While the administration could theoretically attempt to use alternative trade maneuvers to replicate the tariffs, there is no guarantee such a transition would be seamless or legally bulletproof. — Tristan Bove, Fortune, 20 Feb. 2026 See All Example Sentences for bulletproof

Recent Examples of Synonyms for bulletproof

Adjective

Hearing Ryan talk about particularly the metaphor for AIDS and what AIDS meant to him, and that AIDS was quite literally a thing killing beautiful young people in the ‘80s; people who felt untouchable and invincible.

— Jackie Strause, HollywoodReporter, 10 Sep. 2026
Cameron keeps upping the ante, until one becomes convinced the T-1000 is well-nigh invincible.

— ArsTechnica, ArsTechnica, 28 Aug. 2026

Definition of invincible

Adjective

While traditional military equipment, including tanks and armored personnel carriers, remains essential, the president said the war in Ukraine has demonstrated how quickly new technologies are transforming the battlefield.

— Efrat Lachter, FOXNews.com, 24 Sep. 2026
The banknotes, which were wrapped in cellophane and stacked in neat rows under floor and wall tiles and in hidden drawers in wardrobe closets, were carried out in plastic mop buckets and placed in an armored vehicle.

— Barbie Latza Nadeau, CNN Money, 22 Sep. 2026

Definition of armored

Adjective

Google also doesn’t claim that SynthID is invulnerable—the original paper on the technology notes that the watermark is not intended to withstand adversarial attacks.

— ArsTechnica, ArsTechnica, 29 July 2026
For Ross, this gives the character a steadier presence than the standard invulnerable operative often found in genre fiction.

— Matt Emma, USA Today, 29 July 2026

Definition of invulnerable

Adjective

Dropped catches from Steve Smith, Green and Travis Head ensured yesterday's brief rally in the field fizzled out and allowed Bangladesh to bat itself into an almost impregnable position.

— ABC News, ABC News, 14 Aug. 2026
The shell of a good- sized adult abalone is more or less impregnable to most of the kelp forest’s predators, too strong and too thick for penetration.

— Literary Hub, Literary Hub, 29 July 2026

Definition of impregnable

Adjective

That was one of many factors that contributed to UM mustering just 26 yards on its final six possessions after the offense was again virtually unstoppable in the first half.

— Barry Jackson, Miami Herald, 19 Sep. 2026
And then the Buckeyes beat Ball State 56-3 in Week 1, with Sayin and Smith looking unstoppable.

— The Athletic College Football Staff, New York Times, 9 Sep. 2026

Definition of unstoppable

Adjective

Austria made the Final 8 after Jurji Rodionov beat Belgium’s Zizou Bergs 7-6, 6-3 to build an insurmountable 3-1 advantage.

— ABC News, ABC News, 19 Sep. 2026
The report highlights that even as fiber lines are extended into rural areas and billions of federal and state dollars are deployed, affordability and access remain insurmountable barriers for many families.

— Erin Mote, Forbes.com, 15 Sep. 2026

Definition of insurmountable

Adjective

The minute-long trailer for the film documenting late heavy metal icon Ozzy Osbourne‘s final show is packed with emotion, tension, tears and, of course, the indomitable spirit of the Blizzard of Ozz himself.

— Gil Kaufman, Billboard, 24 Sep. 2026
Moore is genuinely hilarious in the role, transforming under the tutelage of Paul Giamatti’s world-weary director character Jerry from a timid mouse into an indomitable and histrionic artist.

— Taylor Antrim, Vogue, 19 Sep. 2026

Definition of indomitable

Browse Nearby Words

bulletins

bulletproof

bullets

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“Bulletproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/bulletproof. Accessed 26 Sep. 2026.

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Synonyms of bulletproof

adjective

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