privity
/ˈprɪvətɪ/noun
(pl. -ies)
- Law a relation between two parties that is recognized by law, such as that of blood, lease, or service【律】（由法律规定的双方关系, 如血亲、租赁或服务等）当事人相互关系：
the parties no longer have privity with each other.
双方不再存在法律规定的当事人相互关系。
词源
Middle English （in the sense 'secrecy，intimacy'）： from Old French privete,from medieval Latin privitas,from Latin privus 'private'.