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opt in

ɒpt ɪn

formal
intermediate
Base verb:
opt
Particle:
in
Separable:
No

What does "opt in" mean?

To choose to participate in something

Examples

  • Employees can opt in to the retirement savings plan.
  • You need to opt in before the deadline.
  • Most clients opted in to the newsletter.
  • Staff can opt in to flexible hours.

How to use it

Frequently used in HR, marketing, and legal contexts.

Similar expressions

enroll
sign up
participate

Opposites

opt out

Related phrasal verbs

  • opt out

    To choose not to participate in something

  • get in

    To enter a place, building, or vehicle

  • turn in

    To go to bed (informal)

  • give in

    To finally agree to something after refusing or resisting

  • bring in

    To introduce or implement something new

  • come in

    To enter a room, building, or place

Use it in a practice answer

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