practitioner /prak-tishˈə-nər/

1. Someone who is in practice, esp in medicine
2. Someone who practises or goes in for something specified

• go off at half cock
• go off at score
• go off on one
• go-offs
• go off the boil
• go off the deep end
• go off with
• goofier
• goofiest
• goofily
• goofiness
• goofinesses
• goofing
• goofs
• goofy
• google
• googled
• Google Doc
• Google Docs
• googles
• googlies
• googling
• googly
• googol
• googolplex