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

Some of the consequences of owing your body sleep are readily apparent, like feeling drowsy, irritable, or brain-foggy, or catching seemingly every virus. —Erica Sloan, SELF, 6 Jan. 2026

High temperatures in the lower and mid-80s are expected much of this week, with some areas also contending with foggy morning commutes. —Newsroom Meteorologist, Austin American Statesman, 5 Jan. 2026

Our setting is 13th-century England and our subject a mysterious creature who stalks the foggy countryside, ready to pounce on errant villagers. —Radhika Seth, Vogue, 1 Jan. 2026

They were followed by a float from San Francisco, the foggy, drizzly city that just experienced its coldest summer in decades. —Itzel Luna, Los Angeles Times, 1 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