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
Tito	TEE-to (Italian, Spanish)	Italian, Spanish, Portuguese
Amatore	-	Italian
Nomiki	-	Greek
Azaziah	-	Biblical
Allissa	ə-LIS-ə	English (Rare)
Braelyn	BRAY-lin	English (Modern)