A splotch is a large, irregular spot or stain.
Splotch can make people think of messes, accidents, or art.
Examples:
There is a splotch of paint on the wall.
She got a splotch of ketchup on her shirt.
The splotch of mud on the floor was big.
The splotch of jam on his face made him look funny.
The splotch of ink on the paper was as big as a house!
The splotch of paint on the wall looked like a monster.