practitioner

noun

Etymology: Etymology tree Proto-Indo-European *per-der. Proto-Indo-European *pr̥h₂-k-yé-ti Proto-Hellenic *prā́ťťō Ancient Greek πρᾱ́σσω (prā́ssō) Proto-Indo-European *-tis Ancient Greek -τις (-tis) Ancient Greek -σῐς (-sĭs) Proto-Indo-European *-kos Ancient Greek -κός (-kós) ? Proto-Indo-European *-tós Proto-Hellenic *-tós Ancient Greek -τος (-tos) ▲ Ancient Greek -κός (-kós) ? Ancient Greek -τῐκός (-tĭkós) Ancient Greek πρακτικός (praktikós)der. Latin prācticusder. Middle French practique Proto-Indo-European *-nós Proto-Italic *-nos Latin -nus Latin -ānus Latin -iānus Old French -ien Middle French -ien Middle French practicienbor. English practician Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English practitioner Formerly practicioner for *practicianer, from practician + -er (the suffix unnecessarily added, as in musicianer).

1. A person who practices a profession or art, especially law or medicine.

   “The [Isaac] Newton that emerges from the [unpublished] manuscripts is far from the popular image of a rational practitioner of cold and pure reason. The architect of modern science was himself not very modern. He was obsessed with alchemy.”

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.”

3. A sly or artful person.

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