Definitions
There is 1 meaning of the phrase
Fog Up.
Fog Up - as a verb
Get foggy
Example: "The windshield fogged up"
Example Sentences
"The cold air caused the windows to fog up."
"If you breathe on a mirror, it will fog up."
"The humidity outside made the car windshield fog up."
"The steam from the boiling pot caused the kitchen windows to fog up."
"The windows in the old house fog up during winter nights."