# X years old

idiom · CEFR A1

Source: https://englishreference.com/idiom/x-years-old
Updated: 2026-04-22

## Meaning

A phrase used to say how old someone or something is. You replace 'X' with a number.

## Examples

- My brother is ten years old.
- She is twenty-five years old and just finished her university degree.
- Although the historic building is over two hundred years old, it remains a beautiful example of local architecture.

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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.