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English definition of “what an idea!”

what an idea!

(also the idea of it!) old-fashioned
something you say to show that you think a suggestion is stupid: I can't turn up at a funeral in a pink jacket. What an idea!InterjectionsSounds used as interjections
(Definition of what an idea! from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “what an idea!”

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