IdiomNatureEnglish

in hot water

Meaning: In trouble.

Example: “He's in hot water with his boss for missing the deadline.”

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Origin: On record in English from the 1530s, though no source manages to settle on a single confirmed origin for the image. One candidate is purely culinary: anything dropped into hot water gets thoroughly cooked, a fair description of what happens to someone caught in real trouble. A second reaches for a medieval judicial ordeal, in which an accused person's arm was plunged into boiling water, with a clean, quickly healing burn taken as a sign of innocence — genuine danger with a real chance of vindication built in. A third points to an older wartime custom of defenders pouring boiling water down on attackers trying to breach a wall, a hostile reception meant to make trespassers reconsider fast. All three keep the same core image: water hot enough that no one steps into it by choice.

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