Opt-out

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The act of opting out of something. countable, uncountable

    "It [Greenpeace] also says that tax exemptions should be phased out for airlines, including the opt-outs that low-cost carriers currently have from paying VAT or fuel duty on kerosene."

  2. 2
    A school or hospital that has withdrawn from local control. British, countable
  3. 3
    A regional broadcast that other stations in the network may elect not to include. countable

    "National television channels (descendant network) with regional or local slots or opt-outs: […]"

Adjective
  1. 1
    Requiring a person or organization to choose explicitly to avoid or forbid something; tending to include by default; used particularly with regard to mailing lists and advertising. not-comparable

    "With opt-out forms, take care to uncheck all unwanted selections."

Antonyms

All antonyms

Example

More examples

"With opt-out forms, take care to uncheck all unwanted selections."

Etymology

From opt + out.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.