# let down

idiom

Source: https://englishreference.com/idiom/let-down
Updated: 2026-08-10

## Meaning

To disappoint; to betray or fail somebody.

## Examples

- I do not want to let you down.
- He felt terrible because he had to let his team down by missing the final game.
- Despite his promise to support the project until the end, he ultimately let his colleagues down when he resigned without warning.

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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.