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professional

/pɹəˈfɛʃ.ə.nəl/ noun

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about professional at Wordnik → Where our words come from →

  1. A person who belongs to a profession.
  2. A white-collar worker, especially one with a specialized, high-earning job such as a doctor or engineer.
  3. A person who earns their living from a specified activity.

adjective

  1. Of, pertaining to, or in accordance with the (usually high) standards of a profession.
    The doctor is very professional in his manner.
  2. Of an occupation, paid, especially so as to provide a livelihood.
    a professional musician, a professional footballer
  3. Engaging in persistent behaviour that is exaggeratedly implied to be a full-time, paid occupation.
    Don't listen to him, he's a professional bullshitter.

Origin

From Middle English professhennalle, professhynalle; equivalent to profession + -al.

From Wiktionary, via Kaikki.org (CC BY-SA)