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 Until recently, the cryptography that proves ownership of digital assets was considered essentially unbreakable. — Joshua Hong, Fortune, 15 Aug. 2026 A couple in crisis wakes to find their apartment sealed off by a mysterious, unbreakable substance. — K. Thor Jensen, PC Magazine, 14 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 The director recalls previously developing an anthology series inspired by the East Asian legend of the Red String of Fate, the idea that two soulmates stay connected by an unbreakable red thread. — Rafa Sales Ross, Variety, 14 July 2026 See All Example Sentences for unbreakable

Recent Examples of Synonyms for unbreakable

Adjective

Furniture should be durable for heavy play, finished with nontoxic materials for the taste-everything phase of toddlerhood, and ideally versatile enough to stick around for more than a few years.

— Julia Harrison, Architectural Digest, 31 Aug. 2026
And, Munster argues, with a product stockpile of some of the most popular and durable tech on earth to build upon, Apple doesn’t necessarily need a product visionary at its helm to continue its world-dominating success streak.

— Sebastian Herrera, Fortune, 31 Aug. 2026

Definition of durable

Adjective

Following that crash, the FAA implemented permanent restrictions on helicopter operations around the airport.

— Thao Nguyen, USA Today, 28 Aug. 2026
At the time she was laid to rest without a grave maker, but this month officials memorialized Raker by commissioning a permanent marker at her burial site.

— Karen Garcia, Los Angeles Times, 28 Aug. 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 2 Sep. 2026.

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Synonyms of unbreakable

adjective

Example Sentences

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