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

The Further, in other words, doesn’t just have to be a foggy, dim netherworld. — Bilge Ebiri, Vulture, 21 Aug. 2026

Brain Fog Feeling mentally foggy or having difficulty concentrating could be a subtle sign that your omega-3 levels are low. — Lindsay Curtis, Verywell Health, 20 Aug. 2026

Nebbiolo is best known as the grape behind Barolo and Barbaresco, but this wine’s grapes, grown on an organic parcel in Clarksburg, ripen entirely differently than on the foggy hillsides of Piedmont. — Anne Ewbank, Sacbee.com, 19 Aug. 2026

Marte's status — on the field and in the clubhouse — going forward is a bit foggier. — ABC News, 17 Aug. 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