UNBREAKABLE Synonyms: 33 Similar and Opposite Words

unbreakable

adjective

Definition of unbreakable

as in durable

not able to be broken The two of them had an unbreakable bond of friendship. The plastic is virtually unbreakable.

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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 unbreakable The phrase stems from the ancient Celtic handfasting ritual where hands are tied to represent an unbreakable bond. — Ashlyn Robinette, PEOPLE, 24 Aug. 2026 Succulents—hardy and diverse—are nearly unbreakable given plenty of sunlight. — Andy Wilcox, Better Homes & Gardens, 24 Aug. 2026 Until recently, the cryptography that proves ownership of digital assets was considered essentially unbreakable. — Joshua Hong, Fortune, 15 Aug. 2026 Navajo Code Talkers used their native language to create unbreakable codes that were critical to Allied victory in World War II. — Debra Utacia Krol, AZCentral.com, 14 Aug. 2026 See All Example Sentences for unbreakable

Recent Examples of Synonyms for unbreakable

Adjective

According to court documents, Kenneth Charles Kessler III, 43, of Miami, and Michael Andrew Gomez, 43, of Miramar, owned and operated seven durable medical equipment supply companies based in Florida.

— Susannah Bryan, Sun Sentinel, 6 Sep. 2026
The astonishing social movements of the decade—particularly the black freedom struggle and the antiwar movement—could have produced a more durable sense of solidarity and collective possibilities.

— Maggie McGowan, The New York Review of Books, 5 Sep. 2026

Definition of durable

Adjective

But one of the things to wonder at amid the good vibes is whether a different, more coherent, more sober scene would have been more meaningful, more enduring.

— Los Angeles Times, Los Angeles Times, 4 Sep. 2026
No Bad Memories appears to extend the Avalanches’ enduring, sample-minded sensibility into a meditation on the sounds that surround us every day.

— SPIN Staff, SPIN, 2 Sep. 2026

Definition of enduring

Adjective

He was signed by Real Madrid in 2010 at the start of Jose Mourinho’s first spell in charge but played just 15 times before leaving for Valencia a year later in a loan deal that was then made permanent.

— David Ornstein, New York Times, 6 Sep. 2026
As a more permanent legacy, the museum has produced companion volumes for each of the three itineraries introduced in 2022, 2024, and 2026.

— Ingrid D. Rowland, The New York Review of Books, 5 Sep. 2026

Definition of permanent

Browse Nearby Words

unbreachable

unbreakable

unbridled

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“Unbreakable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unbreakable. Accessed 15 Sep. 2026.

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Synonyms of unbreakable

adjective

Example Sentences

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