life member

life member (plural life members)

1. Someone who has become a member of an organisation for the rest of their life.
   • 2020 April 22, Barry Doe, “National Trust ceases to consider public transport”, in Rail, page 64:

     I confess that if I weren't a Life Member I would resign in protest.

• life membership

• “life member”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.