The mechanic's hands were smutty from working on the engine.

He smutted his clothes while working in the garden.

He is smuttying the walls with his dirty hands.

The smuttiness of the movie made it inappropriate for children.

The smuttinesses of the city's air pollution were evident in the black soot that covered everything.

He smuttied his hands while working on the car engine.

The children smuttied their clothes while playing in the mud.