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English definition of “idea”

idea

noun [C/U] (KNOWLEDGE)   /ɑɪˈdi·ə/
knowledge or understanding about something: [C] Can you give me a rough idea of the cost (= tell me approximately how much it will cost)? [U] You have no idea what I just said, do you?
(Definition of idea noun (KNOWLEDGE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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