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English definition of “be on cloud nine”

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be on cloud nine

informal
C2 to be extremely happy and excited: "Was Helen pleased about getting that job?" "Pleased? She was on cloud nine!"
Translations of “be on cloud nine”
in Chinese (Traditional) 高興極了, 異常興奮, 樂不可支…
in Chinese (Simplified) 高兴极了, 异常兴奋, 乐不可支…
(Definition of be on cloud nine from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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