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to leave no stone unturned
01
to do everything one can in order to achieve a goal, particularly when it involves finding or looking for something
![to [leave] no stone unturned definition and meaning](https://cdn.langeek.co/photo/42992/original/?type=jpeg "to [leave] no stone unturned definition and meaning")
Examples
He left no stone unturned in his search for his natural mother.
