brain fog

[ breyn fog, fawg ]

Phonetic (Standard)IPA

noun

a mental state marked by difficulty remembering, concentrating, or thinking clearly, often caused by exhaustion, stress, or illness: For new parents, fatigue and brain fog seem inevitable.
He had so much brain fog that a single thought felt impossible.
For new parents, fatigue and brain fog seem inevitable.
Research has found that long COVID can cause brain fog and memory loss.

First recorded in 1850–55; brain ( def ) + fog ¹( def )

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