A2
thick cloud just above the ground or water that makes it difficult to see
Dictionary examples:
In the fog, my cat looked like a tiny lion! (0.0)
The fog was so thick, I walked into a wall thinking it was a door! (0.0)
The fog was so thick, I hugged a tree thinking it was my friend! (0.0)
It took several hours for the fog to clear/lift. (35.9)
Thick/Heavy fog has made driving conditions dangerous. (52.6)