party to

party to something

a participant in something; someone who is involved in something. I refuse to be a party to your dishonest plan!

Name	Pronounced	Usage
Markus	MAHR-kuws (German), MAHR-koos (Finnish)	German, Swedish, Norwegian, Danish, Finnish
Gerolt	KHAY-rawlt	Dutch
Phile	-	Ancient Greek
Eckhart	EK-hahrt	German
Regulus	-	Ancient Roman
Arrow	['ærəu]