A skedaddler is a person who runs away quickly, especially to escape trouble or danger.
The word skedaddler can have a funny or not very serious feeling.
Examples:
The skedaddler ran away from the big dog.
When the teacher turned around, the skedaddler left the room.
The skedaddler is always in a hurry.
The skedaddler left so fast, they forgot their lunch!
The skedaddler ran away from a tiny bug!
The skedaddler is like a super-fast mouse!