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English definition of “sky-high”

sky-high

adjective, adverb uk   /ˌskaɪˈhaɪ/ us  
describes a price or charge that is very high: The price of oil went sky-high when war broke out.Costing too muchExpensive and luxurious
(Definition of sky-high from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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