Words to describe something scary/shockingly frightening:
1. Spooky
E. g. "I bet this place is really spooky late at night".
2. Creepy
E. g. "The creepy feelings one often gets in a strange house. "
3. Eerie
E. g. "An eerie green glow in the sky. "
4. Bloodcurdling
E. g. "A blood - curdling scream. "
5. Spine - chilling
E. g. "A spine - chilling tale. "
6. Spine - tingling
E. g. "A spine - tingling adventure. "
7. Stomach - churning
E. g. "A movie filled with stomach - churning violence. "
8. Hair - raising
E. g. "Hair - raising adventures. "
9. Bone - chilling
E. g. "The bone - chilling sound of gunshots. "
10. Gory (specifically used for something that is bloody)
E. g. "A gory horror film. "
11. Horrific
E. g. "Horrific injuries. "