defeasance

n. 使无效, 废止, 契约解除条件
【经】 (契约)作废, 废除

de.fea.sance

n.（名词）
A rendering void; an annulment.
作废：处于作废的状况；废止，取消


The voiding of a contract or deed.
废除：指合同或契约的作废
A clause within a contract or deed providing for annulment.
废约条款：合同或契约里规定作废的条款

来源：
Middle English defesaunce
中古英语 defesaunce
from Anglo-Norman
源自 英法语
from Old French defesance
源自 古法语 defesance
from defesant [present participle of] desfaire [to destroy] * see defeat
源自 defesant [] desfaire的现在分词 [毁坏] *参见 defeat