leave no stone unturned

1. 1.

   search thoroughly and exhaustively

   “The police left no stone unturned in looking for the President's murderer”

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Questions about leave no stone unturned

What does leave no stone unturned mean?

leave no stone unturned means "search thoroughly and exhaustively".

Is leave no stone unturned a common word?

leave no stone unturned is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.