leave no stone unturned

idiom

Definition of leave no stone unturned

: to make every possible effort to find someone or something The researchers left no stone unturned in their search for the original documents.

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“Leave no stone unturned.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leave%20no%20stone%20unturned. Accessed 19 Sep. 2020.

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