by the hour

at each hour; once each hour. It kept growing darker by the hour. I have to take this medicine by the hour.

Name	Pronounced	Usage
Baller	['bɔ:lə]
Jetta	YET-tah	Dutch
Jerome	jə-ROM	English
Evonne	-	English
Arjun	-	Indian, Hindi, Marathi, Kannada, Telugu, Tamil, Malayalam, Gujarati, Bengali, Nepali
Johanne	zho-AN (French), yo-HAHN-ne (Danish)	French, Danish, Norwegian, Medieval French