Question 1

What does "opt out" mean?

Accepted Answer

To choose not to take part in a system, programme, or service that you have been automatically included in.

Question 2

How do you use "opt out" in a sentence?

Accepted Answer

You can opt out of receiving promotional emails at any time.

Question 3

Is "opt out" formal or informal?

Accepted Answer

"opt out" is register-neutral — appropriate in both casual and formal contexts. Common in legal, medical, political, and digital contexts. An 'opt-out' system includes you by default unless you actively withdraw. Widely used in data privacy law and workplace policy.

opt out

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