opt-in
|opt-in|
🇺🇸
/ˈɑptɪn/
🇬🇧
/ˈɒptɪn/
choose to be included
Etymology
'opt-in' is a modern compound formed in English from 'opt' + 'in', where 'opt' (short for 'to opt') comes from Latin, specifically the word 'optare', and 'in' is the English particle meaning 'in' or 'included'.
'opt' developed from Latin 'optare' ('to choose'). The verb entered English usage (via later European usage of the stem 'opt-') and in the late 20th century combined with the particle 'in' to form the compound 'opt-in', commonly used in marketing and computing contexts.
Initially, 'opt' meant 'to choose'; over time the compound 'opt-in' evolved to mean specifically 'to give consent to be included', especially for subscriptions, communications, or participation in services.
Meanings by Part of Speech
Noun 1
an act of opting in, or a setting/option that allows someone to opt in; explicit consent to be included.
The app uses an opt-in for push notifications rather than enabling them by default.
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Verb 1
to choose to participate in or receive something; to give consent to be included (often used for subscribing to services or agreeing to receive communications).
Users can opt-in to receive monthly newsletters from the company.
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Adjective 1
describing a system, policy, or process that requires or is based on opting in (explicit user consent).
They adopted an opt-in approach for data sharing.
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Last updated: 2025/11/15 22:56