Dirt or soot that makes something dirty, especially on a plant or on a person's face.
Smut can make people think of being dirty or messy.
Examples:
The smut on the plant made it look dirty.
She wiped the smut off her face.
The smut on the wall was hard to clean off.
I got smut on my hands from the fireplace.
The smut on the window made it hard to see through.
He had smut on his face and didn't even know!
A type of writing, pictures, or movies that are about sex and are considered dirty or not good.
Smut can make people think of things that are not polite or good for kids.
Examples:
She doesn't like to read smutty books.
He was watching smut on the computer.
The store doesn't sell smutty magazines.
I accidentally saw some smut on TV.
Smutty movies are not for kids.
He got in trouble for looking at smut on the internet.