Compounds of 怖い

• 怖い
  (adj-i) (1) scary
  frightening
  eerie
  dreadful
  (int) (2) (I'm) afraid
  (P)
• 怖い顔
  (n) grim face
  angry look
• 怖いもの見たさ
  (exp) rubbernecking
  the thrill of looking at something scary or unpleasant and wanting to look at it all the more because it is scary or unpleasant