# eureka moment

idiom

Source: https://englishreference.com/idiom/eureka-moment
Updated: 2026-08-10

## Meaning

The moment of a sudden unexpected discovery.

## Examples

- She had a eureka moment and solved the puzzle.
- After hours of staring at the data, the scientist suddenly had a eureka moment and understood the pattern.
- Walking through the autumn rain, the poet experienced a eureka moment: the ending she had sought for months arrived fully formed, as if whispered by the wind itself.

---

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.