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English definition of “rock bottom”

rock bottom

noun [U] (LOW)    informal
the lowest possible level: Confidence in the government is at rock bottom. Prices have reached rock bottom. The prime minister's opinion poll ratings have hit rock bottom.Higher and lower points of achievementSuccess and achievementsFailuresCosting or worth little or no money
(Definition of rock bottom noun (LOW) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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