IdiomBody & SensesSwedish

under kniven

Meaning: Undergoing surgery.

Literally: Under the knife

Example: “Pappa ska under kniven på måndag för sitt knä.” — Dad is going under the knife on Monday for his knee.

English equivalent: To go under the knife

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Origin: The knife is the surgeon's scalpel, and being under the knife is undergoing an operation, exactly as in English. No particular story lies behind it.

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