- He was frightfully gone on her, you know. - "From the Housetops", George Barr McCutcheon.
- I'm frightfully low in my mind. - "Grey Roses", Henry Harland.
- It was frightfully exciting, and Mirak and Bija were dancing about, unable to keep still, when a sudden shaft of light that burst into the dark shed, and a furiously joyful barking that came down the funnel as if it had been a speaking trumpet, announced Tumbu's arrival in free air. - "The Adventures of Akbar", Flora Annie Steel.