# no doubt

idiom · CEFR B2

Source: https://englishreference.com/idiom/no-doubt
Updated: 2026-04-22

## Meaning

you use this when you are quite sure that something is true or will happen.

## Examples

- There is no doubt that it will rain today.
- She has worked so hard on this project that there is no doubt she will succeed.
- Given the overwhelming evidence presented during the trial, there is no doubt in the jury's mind that the defendant is guilty.

## Origin

Inherited from Middle English *ne doute*, a calque of the Old French *saunz doute*. The French phrase was itself borrowed unadapted into Middle English, providing the parallel construction that persists in the modern idiom.

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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.