# inexcusable

/ˌɪnɪkˈskjuzəbəɫ/ (US) · /ˌɪnɛkskjˈuːsəbəl/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/inexcusable
Updated: 2026-05-18

## Definition

so bad or wrong that it is impossible to find a reason for it. You use this to describe a mistake or a behavior that is completely unacceptable.

For teachers: not able to be justified or defended; deserving of blame or punishment. Often used to describe actions or errors that are morally or socially indefensible.

## Examples

- It is inexcusable to arrive late to a funeral.
- The manager found the employee's repeated failure to follow safety protocols completely inexcusable.
- While the technical error was minor, the lack of a backup system was inexcusable for a company of that size and reputation.

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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.