# unbreakable

/ənˈbɹeɪkəbəɫ/ (US) · /ʌnbɹˈeɪkəbəl/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/unbreakable
Updated: 2026-05-08

## Definition

impossible to break or destroy. You use this to describe things that are very strong or relationships that cannot be ruined.

For teachers: incapable of being broken, fractured, or destroyed. Often used figuratively to describe abstract concepts like bonds, spirits, or records.

## Examples

- The screen is made of unbreakable glass.
- After twenty years of working together, the two business partners shared an unbreakable bond of trust.
- The athlete set an unbreakable record that stood for decades, defying every attempt by younger competitors to surpass his legendary performance.

## Usage notes

- Typically used as a gradable adjective, though in a strict physical sense it functions as an absolute quality.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.