foggy

adjective

fog·​gy ˈfȯ-gē 

ˈfä-

foggier; foggiest

1

a

: filled or abounding with fog

a foggy valley

b

: covered or made opaque by moisture or grime

a foggy mirror

2

: blurred or obscured as if by fog

My memory is a little foggy.

I haven't the foggiest notion. [=I have no idea]

foggily

ˈfȯ-gə-lē 

ˈfä-

adverb

fogginess

ˈfȯ-gē-nəs 

ˈfä-

noun

Synonyms of foggy

• hazy
• misty
• rainy
• murky
• clouded

Examples of foggy in a Sentence

I don't remember what her name was—my memory is a little foggy.

it's pretty foggy outside, so be careful driving home

Recent Examples on the Web

Tips for driving in foggy conditions Take extra caution when on the road or avoid driving if possible. —Don Sweeney, Sacbee.com, 21 Jan. 2026

The Newfoundland hub is also one of the foggiest, cloudiest, rainiest, and snowiest of any major Canadian city. —Josh Lew, Treehugger, 20 Jan. 2026

On this cold, foggy day I was restored by the sounds, sights, smells and solitude of the damp winter woods. —Ernie Cowan, San Diego Union-Tribune, 18 Jan. 2026

Currently the headlights are foggy, other than that the car is in good shape. —John Paul Senior Manager Public Affairs and Traffic Safety Aaa Northeast, Hartford Courant, 10 Jan. 2026

Word History

Etymology

earlier, spongy, marshy, thick, probably from fog second growth of grass, from Middle English fogge

First Known Use

15th century, in the meaning defined at sense 1a

Rhymes for foggy

• boggy
• doggie
• doggy
• groggy
• soggy
• tragi
• yagi

Kids Definition

foggy

adjective

fog·​gy ˈfȯg-ē 

ˈfäg-

foggier; foggiest

1

: filled with fog

2

: vague sense 2

foggily

-ə-lē 

adverb

fogginess

-ē-nəs 

noun