on (one's) own volition

Of one's own choice. No one told me to leave. I left early on my own volition. You failed this class on your own volition—don't try to blame it on me!

Common Names:

Name	Pronounced	Usage
Cajsa	KIE-sah	Swedish
Sota	so:-tah	Japanese
Tanzi	TAN-zee	English (Rare)
Teofila	te-aw-FEE-lah (Polish)	Italian, Polish
Varlam	-	Russian
Edward	['edwəd]