keep on toes

keep somebody on their toes

to force someone to continue giving all their attention and energy to what they are doing He gave me a couple of extra things to do just to keep me on my toes.

Common Names:

Name	Pronounced	Usage
Djuradja	-	Serbian
Vortigern	VAWR-ti-gərn (English)	History
Arisztid	-	Hungarian
Moody	['mu:di]
Soslan	-	Ossetian
Bailif	['beilif]