# wilful

/wˈɪlfəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/wilful
Updated: 2026-05-27

## Definition

describing someone who does something on purpose, even if it is wrong or dangerous. It shows a person is being stubborn or not caring about the rules.

For teachers: intentional and deliberate, especially in a way that is reckless, disobedient, or defiant. Often carries a negative connotation of disregard for consequences or authority.

## Examples

- The wilful child refused to follow the rules.
- The judge ruled that the company's failure to report the leak was wilful, leading to a heavy fine.
- While some mistakes are simply the result of carelessness, a wilful disregard for safety protocols suggests a deeper institutional failure to prioritize human life over profit.

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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.