# ancient history

idiom

Source: https://englishreference.com/idiom/ancient-history
Updated: 2026-08-10

## Meaning

That which happened a long time ago and not worth discussing any more.

## Examples

- Our old argument is ancient history now.
- She told her friend that her past mistakes were ancient history and she wanted to move on.
- Although the bitter rivalry between the two families had been ancient history for decades, the townspeople still whispered about the original conflict.

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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.