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English definition of “on the rocks”

on the rocks

informal likely to fail soon: I think their marriage is on the rocks.Unsuccessful (people and things) If you have an alcoholic drink on the rocks, you have it with pieces of ice: I'll have a whisky on the rocks, please.Drinks - general words
(Definition of on the rocks from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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