frightful
/ˈfraɪtfʊl/adjective
1- very unpleasant, serious, or shocking讨厌的; 严重的; 骇人的：
there's been a most frightful accident.
那里发生了一件非常严重的事故。
1.1
- informal used for emphasis, especially of something bad〈非正式〉（用于加强语气, 尤用于强调某物或某事很糟糕）讨厌的, 令人不愉快的：
her hair was a frightful mess.
她的头发乱作一团。
派生词