1. relating to a job that requires special education, training, or skill
2. showing the skill, good judgment, and polite behavior expected from a person trained to do a job well
3. done as a paid job rather than as a hobby

1. a person who has a job that requires special education, training, or skill
2. a person who is paid to participate in a sport or activity

Examples

• She received professional training as a nurse.
• His professional behavior impressed the clients.
• The company hired a professional photographer for the event.
• As a professional athlete, he trains every day.
• The lawyer gave professional advice about the contract.
• She handled the difficult situation in a very professional manner.
• Many professionals work in downtown office buildings.