privity

詳細解釋：

priv.i.ty

n.（名詞）
【複數】 priv.i.ties
Knowledge of something private or secret shared between individuals, especially with the implication of approval or consent.
私下知悉，默契：幾個人共同知道的秘密或隱秘的事情，尤指一致贊同或同意
Law
【法律】
A relation between parties that is held to be sufficiently close and direct to support a legal claim on behalf of or against another person with whom this relation exists.
當事人的相互關係：當事人之間關係密切、直接到足以支持對代表或緊靠這種關係中另一方的法律要求的關係
A successive or mutual interest in or relationship to the same property.
同一產權的共有或繼承關係

來源：
Middle English privete [secrecy, privacy]
中古英文 privete [秘密，隱秘]
from Old French
源自 古法文
from Medieval Latin provit3s
源自 中世紀拉丁語 provit3s
from Latin provus [single, alone] * see per
源自 拉丁語 provus [單獨的，孤獨的] *參見 per