grandfathered

/ˈɡrændˌfɑðərd/
adjective
  1. Exempt from a new rule or requirement because of existing circumstances or prior status.
    • The factory's emissions were grandfathered, allowing it to operate without installing the latest filters.
    • Her health plan was grandfathered, meaning she could keep her coverage even after the new regulations took effect.
    • The old building was grandfathered under the previous zoning laws, so it didn't have to add a parking lot.
Antonyms
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