professional
//prəˈfɛʃənəl//
Adjective
Relating to or belonging to a profession, especially one requiring special training or education.
She received professional training as a lawyer.
Engaged in a specified activity as one's main paid occupation rather than as an amateur.
She is a professional photographer who travels around the world.
Having or showing the skill, competence, or standards expected of a professional person; competent and efficient.
She did a very professional job on the presentation.
Antonym
Noun
A person engaged or qualified in a profession, especially one requiring special training or education.
She is a medical professional with over ten years of experience.
A person who engages in a specified activity, especially a sport, as their main paid occupation rather than as an amateur.
She turned professional at age 18 and now competes in international tournaments.