established

adjective5

1. •
   Having been in existence for a long time and therefore recognized and generally accepted.
2. •
   Having been successful for a long time and therefore recognized and generally respected.
3. •
   Of a religion, church etc.: formally recognized by a state as being official within that area.
4. •
   Explicitly defined, described or recognized as a reference.
5. •
   Of any social or economic entity: part of the establishment (“groups with socioeconomic power”).