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English definition of “professional”

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professional

noun [C]
 
 
/prəˈfeʃənəl/ ( informal pro)
a person who has the type of job that needs a high level of education and special training: It's important to gather a team of professionals such as a lawyer, an accountant, and a financial planner to help draw up a plan. health/health care/medical professionals IT/finance/marketing professionals dedicated/skilled/trained professionals
someone who has worked hard in the same type of job for a long time, and has a lot of skill and knowledge: a true/consummate professional He's a real pro. If you have a large amount of money to invest, it's better to leave it to the pros.
someone who does an activity or a job to earn money, rather than as a hobby: This will be his first game as a professional. →  Compare amateur adjective
→  See also health professional
(Definition of professional noun from the Cambridge Business English Dictionary © Cambridge University Press)
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