Meaning of PROFESSIONAL in English
[adjective]Professional means related to work that you do as a job.Chris, you're a nurse, so can I ask your professional opinion on bandaging ankles?Both doctors have been charged with professional misconduct (= bad or unacceptable behaviour in their work).Compare amateur.Professional is often used to mean having the qualities that you connect with trained and skilled people, such as effectiveness, skill, organization and seriousness of manner.(approving) It would look more professional if the letter was typed rather than hand-written.She always looks very professional in her smart suits.You've done a very professional job stripping that floor!You describe someone as professional if they do as a job what people usually do as a hobby.She's a professional dancer/photographer.He's a runner who's just turned professional. (= His running used to be a hobby, but now it's his job.)Professional is also used to mean having the type of job that is respected because it involves a high level of education and training.Room for rent in shared house - would suit professional person.It's the sort of bar that's full of young professional types in suits.(informal) She's a professional liar (= She lies a lot).When people talk about taking professional advice they usually mean advice from a lawyer or an accountant (= someone who deals with money matters).In football a professional foul is an intentional foul (= act which breaks the rules), esp. one which is intended to prevent the other team from scoring a goal.Professional help is sometimes used to avoid saying help from a psychiatrist (= a doctor trained in treating mental problems).Personally, I think he should get some professional help.
Cambridge English vocab. Кембриджский английский словарь. 2012