keep (one) on (one's) toes

To force someone to stay active, alert, and focused on something or someone. Having two kids under age five sure keeps me on my toes!

Name	Pronounced	Usage
Iwo	EE-vaw	Polish
Jeremiel	-	Biblical
Mahmud	-	Arabic, Persian, Pashto, Bengali, Indonesian, Malay
Kerberos	-	Greek Mythology
Sinjin	-	English (Rare)
Saverio	-	Italian