1. Become professional or proceed in a professional manner or in an activity for pay or as a means of livelihood
   "The amateur athlete professionalised after winning the championship";
   - professionalize
    
2. Make professional or give a professional character to
   "Philosophy has not always been professionalised and used to be a subject pursued only by amateurs";
   - professionalize

Derived forms: professionalising, professionalises, professionalised

Type of: alter, change, modify

Encyclopedia: Professionalise