English / phrasal verb
Opt out
MEANING IN ENGLISH
To choose not to participate in something or decide against an option
In context
01
Several volunteers decided to opt out of the clinical trial due to potential side effects.
02
Researchers can opt out of the collaborative study if it compromises their ethical standards.
Synonyms
Withdraw,back out,decline
Antonyms
Opt in,participate,join
Collocations
Opt out of a trial,choose to opt out,opt-out clause