This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. One who practices something, especially an occupation, profession, or technique.

n. A person who practices a profession or art.

n. One who is engaged in the actual use or exercise of any art or profession, particularly that of law or medicine.

n. One who does anything customarily or habitually.

n. A sly or artful person.

n. A practiser; one who acquires knowledge from actual practice; one who has practical experience.

n. One who is engaged in the actual practice or exercise of any art or profession, as law or medicine.

n. One who uses schemes or artifices; a plotter; a conspirator.

n. someone who practices a learned profession

"Inks can become paradoxically darker, skin areas can blanch, and if the practitioner is working near lashes and brows, hair follicles can become damaged leading to permanent hair loss."

professional person    professional   

general practitioner   

homeopath    homoeopath    clinician    gongorist   

worked   

commissioner    conditioner    parishioner    petitioner   

investigator    physician    scholar    psychologist    administrator    architect    journalist    adviser    instructor    teacher