foggy

(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

not have the foggiest

To have no knowledge or understanding whatsoever about something. He doesn't have the foggiest how hard it is to run a business. A: "Do you know where the car keys are?" B: "I don't have the foggiest. Sorry."
See also: foggy, have, not

not have the foggiest idea

To have no knowledge or understanding about something. He does not have the foggiest idea how hard it is to run a business. I do not have the foggiest idea where I left my car keys.
See also: foggy, have, idea, not

not have the foggiest notion

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

the foggiest

A basic, vague, or rudimentary knowledge or understanding (about something). Often used in negative constructions. A: "Do you know where the car keys are?" B: "I haven't the foggiest. Sorry." Do you have the foggiest how much this mistake is going to cost the company? Even though I could speak a little Japanese, I could only pretend to have the foggiest what the woman was talking about.
See also: foggy

the foggiest (idea)

Knowledge or understanding of something. Typically used in the negative to show that one does not know something. He does not have the foggiest idea how hard it is to run a business. Where are your keys? I haven't the foggiest.
See also: foggy

the foggiest inkling

A basic, vague, or rudimentary knowledge or understanding (about something). Often used in negative constructions. A: "Do you know where the car keys are?" B: "I haven't the foggiest inkling. Sorry." Do you have the foggiest inkling how much this mistake is going to cost the company? Even though I could speak a little Japanese, I didn't have the foggiest inkling what the woman was talking about.
See also: foggy, inkling

the foggiest notion

A basic, vague, or rudimentary knowledge or understanding (about something). Often used in negative constructions. A: "Do you know where the car keys are?" B: "I haven't the foggiest notion. Sorry." Do you have the foggiest notion how much this mistake is going to cost the company? Even though I could speak a little Japanese, I could only pretend to have the foggiest notion what the woman was talking about.
See also: foggy, notion

the foggiest understanding

A basic, vague, or rudimentary understanding (about something). Often used in negative constructions. Do you have the foggiest understanding of how much this mistake is going to cost the company? Even though I could speak a little Japanese, I didn't have the foggiest understanding what the woman was talking about.
See also: foggy, understanding
Farlex Dictionary of Idioms.

foggiest (idea)

Fig. (even) a hazy idea. (Usually in the negative.) I'm sorry I don't know. I haven't the foggiest. I don't have the foggiest idea of how to do this.
See also: foggy
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

not have the foggiest idea

or

not have the foggiest

INFORMAL
COMMON If you do not have the foggiest idea or do not have the foggiest, you do not know anything at all about something. I did not have the foggiest idea what he meant. `How often does it need to be changed?' — `Haven't the foggiest.'
See also: foggy, have, idea, not
Collins COBUILD Idioms Dictionary, 3rd ed.

not have the foggiest (idea or notion)

have no idea at all. informal, chiefly British
See also: foggy, 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

the foggiest (idea)

n. (even) a hazy idea. (Usually in the negative.) I’m sorry I don’t know. I haven’t the foggiest.
See also: foggy, idea

the foggiest

verb
See the foggiest idea
See also: foggy
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • hadn
  • (one) hasn't the foggiest
  • 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 me
References in periodicals archive
Similarly, misty to foggy conditions are likely in offshore areas, along with some clouds, at first and by late at night.
Forecast for high humidity, poor visibility due to mist and fog
The vehicles carrying load projected outside vehicles dimension are not allowed to enter on National Highways during foggy season.
Mobile App developed to ensure safe journey on motorways, highways
An official of the Met Office said the foggy conditions prevailed early morning hours in the Potohar region due to humidity up to 60pc.
With no sign of rains, foggy conditions may intensify
Mark, Todd, and Zola begin to crumble when evaluating future job prospects, the feeble reputation of Foggy Bottom, and their own personal decline into debt ($200,000 each without the steep interest and fees).
THE ROOSTER BAR
Police said they will not tolerant to any lorry or bus driver caught driving on the Abu Dhabi roads during the foggy conditions.
UAE police step up efforts to reduce fog accidents
'This area had always been foggy at certain times but in recent days the fog had remained thus reducing visibility and making it difficult to drive,' he said.
Kuala Pilah residents experiencing extraordinary cold weather
View of a foggy street from the windscreen of a vehicle --Flickr/Emdot CAIRO -- 28 December 2017: Egyptian winter tends to be foggy and rainy.
Safe driving tips for foggy weather
According to Express News, the unfortunate incident occurred when the passenger bus met with its fate due to a severe foggy condition in the area.
At least 11 people killed in Khanewal road accident
Lahij, 13 Muharram,1439 AH, 03 October,2017 , SPA -- With the support of King Salman Center for Relief and Humanitarian Aid, the second phase of the foggy spraying campaign to control mosquitoes carrying dengue fever started today at Al-Houta Directorate in Lahij Governorate.
King Salman Center supports campaign against dengue in Lahij, Yemen
The I'm a Celebrity winner is cheesed off because the You're Beautiful crooner's signature Blunt Pizza outsells his Foggy Pizza at their Swiss restaurant.
FOGARTY'S PIZZA WAR
But I'm a Celebrity champ and former biker Foggy said he felt "cheated" that You're Beautiful star Blunt gets first pick of the ingredients and always outsells him.
Blunt's pizza has Foggy so cheesed off
Fresh warnings have been issued to motorists after one person died and another was seriously injured in a two--vehicle crash in foggy conditions.
Fog warning after Abu Dhabi road death
On a foggy weather, an automobile hit a semi-trailer truck, which left Orhan Erdoy-an in the car dead.
Traffic accident claims one life in western Turkey
Four-time world superbike champ Foggy, 49, beat former X Factor contender Jake Quickenden and TV's Melanie Sykes to take the jungle title on Sunday night.
Foggy at airport? Great!
RACING star James Whitham is urging viewers to back his best mate Carl 'Foggy' Fogarty in the I'm A Celebrity Jungle.
JUNGLE FEVER; Motorcycle race ace Jamie's urging public to back best mate Foggy