Simple past tense and past participle of fog.(verb)
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Use "fogged" in a sentence
"They left the plates on the table and walked, each holding a sleeping child, into Myra's study, the lights off, the windows fogged from the warmth of their collective breath."
"Anyway, I was a bit brain fogged this morning and hungry (protein deprived probably)."
"HAMMER: Well, I think that also kind of fogged the issue for a lot of people as to what ended up happening."