mist up

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mist up

1. To become filled with mist. The pasture often misted up as the cool night gave way to the warmth of the morning.
2. To become covered in or obscured by condensation. The windows misted up in the early hours of the cold morning.
3. To cause something to become covered in condensation. In this usage, a noun or pronoun can be used between "mist" and "up." The warm air of the shop misted my glasses up as I stepped in from the cold. My breath misted up the windows of the car as I sat waiting in the parking lot for Lisa.
4. Of eyes, to fill with tears. I'll never forget the way my grandfather's eyes would mist up whenever we got in the car to drive back home at the end of our visits with him each summer.
See also: mist, up