cloud over

cloud over idiom
    Also, cloud up.
  1. Become overcast with clouds, as in It's clouding over now, so it may rain soon, or It was too hot and sunny, but after a while the sky clouded up and we ventured outside. [Mid-1700s]
  2. Become opaque, misty, or dim, as in I'm sweating so much that my eyeglasses are clouded over.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.