* Ghosts and monsters: This is the main source of his fear, leading to him running away and hiding frequently.
* The unknown: Anything spooky or unexplained makes him nervous and he prefers to stay away from anything that could be dangerous.
* Being in danger: Shaggy is very easily frightened and tries to avoid any situation that could put him in harm's way.
* Being alone: He often relies on Scooby-Doo for comfort and support, particularly when facing his fears.
While he dislikes these things, Shaggy is ultimately a good friend and loyal member of Mystery Inc. He often finds the courage to confront his fears, especially when it comes to helping his friends solve mysteries.