Definitions
There is 1 meaning of the phrase
Cloud Up.
Cloud Up - as a verb
Become covered with clouds
Example: "The sky clouded over"
Synonyms (Exact Relations)
Example Sentences
"The sky began to cloud up, indicating an approaching storm."
"The weather forecast predicted that it would cloud up later in the day."
"As evening approached, the sky started to cloud up."
"Don't forget your umbrella, it's starting to cloud up outside."
"Whenever it starts to cloud up, my cat hides under the bed."