practitioner

noun3

1. •
   A person who practices a profession or art, especially law or medicine.
2. •
   One who does anything customarily or habitually.

   • On January 31, 2023, four Falun Gong practitioners in Songbu Town, Macheng City, Hubei Province were arrested. Two of the arrested are still detained as of February 25, 2023. — 2023
3. •
   (old-fashioned) A sly or artful person.

   • […] the men of St. John's were cunning practitioners, in shaking off their Masters and Heads. — 1572