what's the big idea? Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “what's the big idea?” in the English Dictionary

"what's the big idea?" in British English

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what's the big idea?

informal used to ​ask someone why they have done something ​annoying: What's the big ​idea? I was ​watching that ​programme!
(Definition of what's the big idea? from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “what's the big idea?”
in Chinese (Simplified) 你这是什么意思?…
in Chinese (Traditional) 你這是甚麼意思?…
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