Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “opt in”

opt in

verb [I] uk phrasal verb with opt   /ɒpt/ us    /ɑːpt/
to choose to be part of an activity, arrangement, etc.: Company policy is to leave new workers out of the pension scheme, unless they choose to opt in.
(Definition of opt in phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of opt in?
Add Cambridge dictionaries to your browser to your website

More meanings of “opt in”

Definitions of “opt in” in other dictionaries

Translations of “opt in”

Word of the Day

give the green light to sth

to give permission for someone to do something or for something to happen

Word of the Day

Highly delighted, bitterly disappointed, ridiculously cheap: adverbs for emphasis.

by Liz Walter,
October 22, 2014
We often make adjectives stronger by putting an adverb in front of them. The most common ones are very and, for a stronger meaning, extremely: He was very pleased. The ship is extremely large. However, we don’t use very or extremely for adjectives that already have a strong meaning, for example fantastic,

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More