scary

/ˈskɛri/
adjective
  1. Causing fear or fright; frightening.
    • Walking alone in the dark forest can be scary.
    • She told a scary story about a haunted house.
    • The horror movie was too scary for young children.
  2. Informal: very surprising or alarming.
    • He has a scary amount of energy for someone his age.
    • It's scary how fast technology is changing.
    • The price of that car is scary high.
Antonyms