not have the faintest

not have the faintest (notion)

To have no knowledge or understanding about something. He doesn't have the faintest notion how hard it is to run a business. A: "Do you know where the car keys are?" B: "I don't have the faintest, sorry."
See also: faint, have, not
Farlex Dictionary of Idioms.

not have the faintest (idea)

have no idea. informal
See also: faint, have, not
Farlex Partner Idioms Dictionary

not have the ˈfaintest/ˈfoggiest (idea)

(British English, informal) have no idea at all about something; not know anything at all: I haven’t got the faintest idea what to buy Roger for his birthday. ‘Where are we?’ ‘I’m afraid I haven’t the foggiest.’
See also: faint, foggy, have, not
Farlex Partner Idioms Dictionary
See also:
  • not have the faintest (notion)
  • not have the foggiest notion
  • not have the faintest idea
  • have a working knowledge of (something)
  • have a working knowledge of something
  • to (one's) knowledge
  • to your knowledge
  • to the best of (one's) knowledge
  • pale at the notion of (something)
  • knowledge
References in periodicals archive
figure By GERALD BWISAbr When Esther Njoki saw her son-in-law George Ngugi Kinyua on Sunday last week, she did not have the faintest idea that he would be dead less than 48 hours later.According to Njoki, a resident of Rafiki village in Saboti Sub County, Trans-Nzoia County, Kinyua was a road contractor.
Who'll help us? Woman mourns son-in-law in FlySax crash
Miliband, let alone the Labour Party, did not have the faintest idea how this was to be accomplished.
Fuel policy will lead to catastrophe
Donald did not specify his beef and around 99% of the guests at the dinner will still not have the faintest idea the world No.1 is festering about national newspaper digs at him for never having won a major.
Westwood is on charm offensive; CHIP SHOTS LYTHAM
Anyone who has not been in combat does not have the faintest idea how traumatic that experience is, and even after discharge from the armed forces, that trauma lasts for a long time.
A veteran of the war in Europe appreciates the GIs of the Pacific
There is now no doubt that he did not have the faintest idea whether Saddam Hussein had weapons of mass destruction or not and that he blindly followed George Bush into what was simply a personal vendetta.
Ron Mackenna: BLAIR GETS AWAY AGAIN
Shadow Work and Pensions Secretary David Willetts said the confusion showed the Government 'does not have the faintest idea' of the true figure.
Where did missing pension funds go?
And their demand for first-hand sources for information about a president of the United States is far more bizarre, because it tells me these particular readers do not have the faintest idea how political journalism works or how citizens acquire their information about the inhabitants of the White House.
"Can the president think?"..