brain fog
noun
: a usually temporary state of diminished mental capacity marked by inability to concentrate or to think or reason clearly
Examples of brain fog in a Sentence
Recent Examples on the Web
Some women suffered through menopause symptoms such as joint aches and brain fog for years and met with various doctors before reaching out to Elizabeth Lapeyre's New Orleans medical office.
—
Laura Trujillo,
USA Today,
22 June 2026
No, a girl needs that for brain fog.
—
Samantha Agate,
Kansas City Star,
17 June 2026
No, a girl needs that for brain fog.
—
Samantha Agate,
Miami Herald,
17 June 2026
The Link Between Hot Flashes and Memory Many women going through menopause report brain fog, forgetfulness and difficulty concentrating.
—
Lauryn Higgins,
Flow Space,
17 June 2026
See All Example Sentences for brain fog
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Laura Trujillo,
USA Today,
22 June 2026
No, a girl needs that for brain fog.
—
Samantha Agate,
Kansas City Star,
17 June 2026
No, a girl needs that for brain fog.
—
Samantha Agate,
Miami Herald,
17 June 2026
The Link Between Hot Flashes and Memory Many women going through menopause report brain fog, forgetfulness and difficulty concentrating.
—
Lauryn Higgins,
Flow Space,
17 June 2026
See All Example Sentences for brain fog
Cite this Entry
“Brain fog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 27 Jun. 2026.
Copy CitationMedical Definition
brain fog
noun
: a usually temporary state of diminished mental capacity marked by inability to concentrate or to think or reason clearly
This brain fog can be a result of being overly stressed, tired, carrying extra weight, consuming too many calories or consistently consuming a diet poor in nutrients.—Kylie Helgens, The Gazette (Cedar Rapids, Iowa)
Kylie Helgens, The Gazette (Cedar Rapids, Iowa)Love words? Need even more definitions?
Merriam-Webster unabridged
