Definition of frightful adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈfraɪtfl//
    ; NAmE NAmE//ˈfraɪtfl//
    (old-fashioned, especially British English)
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  1. 1(informal) used to emphasize how bad something is synonym awful, terrible It was absolutely frightful! This room's in a frightful mess. They’re making a frightful noise.
  2. 2very serious or unpleasant synonym awful, terrible a frightful accident
See the Oxford Advanced American Dictionary entry: frightful