He got himself into a frightful muddle.

他自己陷入了极度的混乱之中。

《柯林斯英汉双解大词典》

This room's in a frightful mess.

房间里乱七八糟。

《牛津词典》

Mewing and running, they caused a frightful confusion.

他们喵喵叫着，跑着，造成了可怕的混乱。

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Google Music users learned of a frightful new policy this morning that dictates a user may de-authorize only four devices in a year, out of ten total activations.

ENGADGET: Google Music users granted de-authentication reprieve as company retools activation system

Whether or not the weather outside is frightful, knowing how and why airlines operate the way they do is a first step in minimizing the effects of travel calamity.

BBC: How to minimise the effect of travel disasters