at an unearthly hour
成語所屬單字hour
at an unearthly hour — 慣用語
1. Very early in the morning, often causing annoyance.
1.慣用語
釋義
在很早的時候（令人惱怒）
Very early in the morning, often causing annoyance.
例句
The construction work started at an unearthly hour today.
Why did you wake me at an unearthly hour?