I.professional [Brit prəˈfɛʃ(ə)n(ə)l, Am prəˈfɛʃ(ə)n(ə)l] ADJ
1. professional (relating to an occupation):
2. professional (not amateur):
- he's a professional troublemaker, gossip iron
3. professional (of high standard):
- he did a very professional job