ghastly             
adjective uk/ˈɡɑːst.li/ us/ˈɡæst.li/
 可怕的;令人震惊的
unpleasant and shocking
  Today's newspaper gives all the ghastly details of the murder. 今天的报纸刊登了谋杀案的全部细节,令人毛骨悚然。 
  UK informal极坏的;极糟糕的 
extremely bad
  What ghastly weather! 天气太糟糕了! 
 It was all a ghastly mistake. 这是极其严重的错误。 
 I thought her outfit was ghastly. 我觉得她的套装难看死了。 
  一脸病容的;(由于惊吓)面如死灰的;(尤指)面无血色的
If someone looks ghastly, they look very ill or very shocked, especially with a very pale face.
  You look ghastly - are you okay? 你脸色苍白——你没事儿吧?