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professional

 
 
/prəˈfeʃənəl/ adjective

Definition

JOB [always before noun] relating to a job that needs special training or education: You should get some professional advice about your finances.
EARNING MONEY Someone is professional if they earn money for a sport or activity which most people do as a hobby: a professional athlete/musician a professional golf championship → Opposite amateur adjective
SKILL showing skill and careful attention: a professional attitude He looks very professional in that suit. → Opposite unprofessional
(Definition of professional adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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