Akademik

not have the foggiest (idea)
not have the foggiest ( idea/notion/) spoken phrase
used for emphasizing that you do not know anything at all about something

I don’t have the foggiest idea why he called me.

Thesaurus: ways of saying that you do not know or understandsynonym
Main entry: foggy

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not have the ˈfoggiest (idea) idiom
(informal) to not know anything at all about sth

•

‘Do you know where she is?’ ‘Sorry, I haven't the foggiest.’

Main entry: ↑foggyidiom

Useful english dictionary. 2012.