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opt in

Meaning: If you opt in, you choose to accept something, or do something, that is offered to you as an option.

For example:

  • opt in When they're purchasing a product online, we give our customers the chance to subscribe to our newsletter, but we only send it to those who've opted in.

  • opt in We have English classes for our workers. They don't have to attend, but if they opt in they're expected to complete the course.

Quick Quiz:

Customers who want the extended warranty have to opt in, which means they get it
  1. automatically
  2. if they choose to
  3. without choosing to

Grammar explanation: separable and non-separable phrasal verbs

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