opt out phrasal verb ( see also ↑ opt )
1 . to avoid doing a duty
opt out of
You can’t just opt out of all responsibility for the child!
2 . to decide not to be part of a group or system
opt out of
Britain wants to opt out of the new European regulations.
3 . if a school or hospital in Britain opts out, it decides to control the money that it is given by the government, instead of being controlled by local government