›[before noun]related to work that needs a high level of education or special training: professional advice/judgments/opinionsYou should seek professional advice before doing this.a professional background/career/lifeShe has spent the bulk of her professional life working in the public sector.professional experience/qualifications/trainingThe importance of professional qualifications varies enormously between different industries.a professional association/body/organizationprofessional services/skills/standards
›having the type of job that is respected because it involves a high level of education and training: Many of those who want to rent are single, professional people who do not want to share.
›having the qualities that you connect with trained people, such as being organized and showing a high standard of work: It would look more professional if the letter were typed.He has behaved in a very professional way.a professional environment/relationship
›suitable for a person working in a particular profession: professional accountability/conduct/misconductHe is now facing charges of serious professional misconduct.
›(also informalpro)doing an activity or a job to earn money, rather than as a hobby: a professional athletepro football/sports → Compareamateuradjective