Definition of woopie in English:

woopie

(also woopy)

Pronunciation /ˈwo͝opē/ /ˈwʊpi/

nounwoopies

informal North American
  • An affluent retired person able to pursue an active lifestyle.

    • ‘Welcome to the VPF retreat for woopies; BJ, bring your dentures and pills against gastritis and party with us’
    • ‘Now that the kids are grown and she has retired from her job to run her own business, she has joined the ranks of the Woopies.’
    retired person, pensioner, old-age pensioner, OAP

Origin

1980s elaboration of the acronym from well-off older person.