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3. in deep water

in deep water

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in deep water

Fig. in a dangerous or vulnerable situation; in a serious situation, especially one that is too difficult or is beyond the level of one's abilities; in trouble. John is having trouble with back taxes. He's in deep water. Bill got in deep water in algebra class. The class is too difficult for him, and he's almost failing.

See also: deep, water

in deep water

In difficulty.

See also: deep, water