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English definition of “go through the roof”

go through the roof

C2 to rise to a very high level : Prices have gone through the roof.Value and price increases C2 (also hit the roof) informal to get very angry : When I was expelled from school , my parents went through the roof.Becoming angry and expressing anger
(Definition of go through the roof from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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