opt-out

opt-out
ˈopt-out noun [countable] British English
1. when a person or group chooses not to join a system or accept an agreement:
    an opt-out clause
    opt-out on/from
    the government’s opt-out on the euro
2. when a school or hospital in Britain chooses to control its own money, instead of being controlled by local government:
    an opt-out school

opt-outBrE /ˈɒpt aʊt/ 🔊NAmE /ˈɑːpt aʊt/ 🔊 noun (often used as an adjective 常用作形容词) (in Britain) the action of a school or hospital that decides to manage its own money and is therefore no longer controlled by a local authority or similar organization （英国学校、医院从地方当局财政管辖的）退出，脱离the act of choosing not to be involved in an agreement 不参与协议的决定◆an opt-out clause退出的条款◆MPs hoped to reverse Britain's opt-out from the treaty. 国会议员希望推翻英国退出该条约的决定。🔊🔊