# denier

CEFR C2 · Noun

Source: https://englishreference.com/word/denier
Updated: 2026-05-28

## Definition

a person who refuses to believe that something is true, especially when there is clear evidence. You often hear this word when people talk about climate change or history.

For teachers: a person who refuses to accept the truth or reality of something, typically in the face of overwhelming evidence. Often used in the context of historical revisionism or scientific consensus.

## Examples

- He is a climate change denier who ignores the data.
- The website was shut down because it provided a platform for Holocaust deniers to spread their false claims.

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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.