Last Updated：2025/12/04

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(informal) A mental condition in which the subject experiences problems in concentrating, thinking clearly, or remembering things.

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brain fog

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Source Word

brain fog

Noun

informal uncountable

(informal) A mental condition in which the subject experiences problems in concentrating, thinking clearly, or remembering things.

Japanese Meaning

集中力や記憶力、思考力が低下し、頭がはっきりしない状態 / はっきりと考えたり、物事を記憶したりすることが困難な、精神的な霧がかかった状態

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After three sleepless nights, she struggled at work because brain fog made it hard to focus.

Google Translation / DeepL Translation

三晩眠れなかったせいで脳のもやもや感があり、彼女は仕事で集中するのに苦労した。

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Sense（1）

(informal) A mental condition in which the subject experiences problems in concentrating, thinking clearly, or remembering things.

Then, as the brain fog lifted a little and cleared away, his chin quivered and he went on : “ Oh, Daisy, Daisy ; it comes back to me now, the years that are gone, and you as you were then. ”

Google Translation / DeepL Translation

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brain fog

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