1. professional tennis playing tennis for money
  2. personal computer a small digital computer based on a microprocessor and designed to be used by one person at a time
  3. professional person a person engaged in one of the learned professions
  4. professional dancer a performer who dances professionally
  5. personal expense the cost of personal or family living
  6. promotional expense the cost of promoting a product
  7. professional basketball playing basketball for money
  8. professionalism the expertness characteristic of a business person
  9. professional football football played for pay
  10. professional golfer someone who earns a living by playing or teaching golf
  11. professional boxing boxing for money
  12. professional wrestling wrestling for money
  13. professional baseball playing baseball for money
  14. professional relation the relation that exists when one person requests and is granted professional help from a qualified source
  15. professional association an association of practitioners of a given profession
  16. professional golf playing golf for money
  17. professional of or relating to or suitable as an occupation
  18. professionalization the social process whereby people come to engage in an activity for pay or as a means of livelihood
  19. professionalisation the social process whereby people come to engage in an activity for pay or as a means of livelihood
  20. incompetence lack of physical or intellectual ability or qualifications