# turn upside down

idiom

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

## Meaning

To thoroughly examine.

## Examples

- I turned my room upside down looking for my keys.
- The police turned the apartment upside down searching for evidence of the crime.
- The investigators turned the entire archive upside down, hoping to uncover the forgotten documents that would finally explain the mystery.

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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.