# thin air

idiom

Source: https://englishreference.com/idiom/thin-air
Updated: 2026-08-10

## Meaning

An unknown location; (by extension) apparent disappearance or nonexistence.

## Examples

- My keys just vanished into thin air.
- The suspect ran around the corner and seemed to disappear into thin air.
- The evidence against the defendant did not simply vanish into thin air, but rather was systematically destroyed by those seeking to protect his reputation.

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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.