foggiest

A foggy day is when the air is misty and hard to see through. This can make it difficult to walk or drive.

When people say that something is foggy, they often mean that their mind or memory is a bit confused. For example, "I'm having a foggy day, I don't remember where I put my keys." It's not just the weather outside that's affecting them! If you're trying to solve a tricky math problem and your brain feels like it's in a cloud, then your thinking might be a bit foggy. On the other hand, if there was a thick fog rolling in, it could also be hard to see what you're doing.