foggy
Americanadjective
-
foggier,
comparative
-
foggiest
superlative
-
thick with or having much fog; misty.
a foggy valley;
a foggy spring day.
-
covered or enveloped as if with fog.
a foggy mirror.
-
(of thinking, ideas, etc.) dim or unclear as if obscured by fog; vague.
I haven't the foggiest notion of where she went.
- Synonyms:
- muddleheaded, muddled, fuzzy, befuddled
-
Difficulties with memory, concentration, attention, and fatigue left me feeling foggy and muddled much of the time.
-
Photography. affected by fog.
adjective
-
thick with fog
-
obscure or confused
-
another word for fogged
-
no idea whatsoever
I haven't the foggiest
Other Word Forms
Derived Forms
Inflected Forms
Adjectives
Etymology
Origin of foggy
First recorded in 1520–30; fog 2 + -y 1; original sense was “marshy, thick, murky”
Explanation
Something that's foggy is cloudy or murky, filled with fog. A foggy view is blurred and indistinct, just like a foggy mind. Driving on a foggy road can be tricky, since it's more or less like driving inside a cloud. When the inside of your head feels this way — blurry, clouded, and vague — you can also used foggy in a figurative way: "Her memory grew foggy as the years went by." Experts aren't sure whether foggy or fog came first, but in either case they suspect a Scandinavian root.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
In the San Gabriel Mountains, a blue wind phone stands on a foggy forest ridge near a roadside turnout in Wrightwood.
From Los Angeles Times ● Jul. 6, 2026
"A lot of people were suffering from chronic fatigue, constant headaches, low vitamin B12, which was subsequently causing things like heart palpitations and very foggy heads," she said.
From BBC ● May 18, 2026
Growing up on his family’s East Contra Costa County farm in the 1960s, Dennis Baldocchi thought the whole world was foggy until a friend took him on a hike that climbed above it.
From The Wall Street Journal ● Mar. 29, 2026
Death Valley on Thursday scorched in 40C degrees while the often cool and foggy San Francisco tied its historic March record at 29C degrees, and skiers in Colorado were hitting the slopes shirtless.
From Barron's ● Mar. 20, 2026
“It’s supposed to be foggy next weekend. Maybe we can have another sleepover and stake out the beach again.”
From "The Wrong Way Home" by Kate O’Shaughnessy
It’s likely that her grief is making the future even foggier.
From MarketWatch ● Apr. 25, 2026
“This will make the picture of Russia foggier still,” said Maksim Kurnikov, a broadcast journalist in exile in Berlin.
From New York Times ● Apr. 4, 2023
"It was even foggier the next day. We came up short at the end, but this week we’ve really been trying to be detail oriented."
From Fox News ● Oct. 16, 2021
It’s a clever scene in which we’re reenacting a memory, and the deeper we probe, the foggier and more unnatural the worlds gets.
From Los Angeles Times ● Nov. 20, 2020
Next morning dawned colder and foggier than ever, and even Wolf seemed dejected as he led them upstream.
From "Wolf Brother" by Michelle Paver
Nobody has a foggiest how to use it.
From Slate ● Aug. 15, 2026
The seven-week study window covered the time of year when Heber Valley is the foggiest.
From Science Daily ● Dec. 29, 2023
But the Outer Sunset, which stretches along the Pacific Ocean and is one of the city’s foggiest sections, feels far from the bustle of city life.
From New York Times ● Jun. 9, 2023
Shifting away from the foggiest areas could save a little time and reduce the risk of accidents.
From Scientific American ● May 1, 2023
“I haven’t the foggiest idea,” said Mr. Wonka.
From "Charlie and the Chocolate Factory" by Roald Dahl
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
