资料来源 : pyDict

可怕的,令人毛骨悚然的,奇怪的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Frightfulness \Fright"ful*ness\, n.
   The quality of being frightful.

资料来源 : WordNet®

frightfulness
     n : the quality of being frightful