at (someone's) mercy

Under the control of or dictated by the actions of someone else, without the ability to defend or liberate oneself. Please don't report me to the head master. I'm at your mercy! Once the gangsters were able to blackmail Susan, she was at their mercy.

Common Names:

Name	Pronounced	Usage
Domagoj	-	Croatian
Genevieve	['dʒenəvi:v]
Nova	NO-və	English
ŽEljko	-	Croatian, Serbian, Slovene
Annis	AN-is	English
Miles	['mailz]