(one) hasn't the foggiest

(one) hasn't the foggiest

To have no knowledge or understanding whatsoever about something. I'm trying to find my car keys, but I just haven't the foggiest where they could be. A: "Did you have any idea what would happen?" B: "I hadn't the foggiest, I swear!"
See also: foggy
Farlex Dictionary of Idioms.
See also:
  • hadn
  • foggy
  • not have the faintest/foggiest
  • not have the foggiest
  • not have the foggiest notion
  • the foggiest idea
  • foggiest
  • not have the foggiest idea
  • the foggiest understanding
  • for the life of one