practiced (adj.)

• accomplished
• blase
• conversant
• cosmopolitan
• experienced
• finished
• initiate
• initiated
• knowing
• mature
• matured
• old
• old-time
• practical
• prepared
• primed
• professional
• ripe
• ripened
• sagacious
• seasoned
• skilled
• sophisticated
• technical
• trained
• tried
• versed
• vet
• veteran
• worldly
• worldly-wise