practiced

1. Skilled or expert; proficient: He is practiced in the art of design. She is a practiced lecturer.
2. Acquired or brought to perfection by practice: greeted the guests with practiced courtesy.

adjective

1. Proficient as a result of practice and study: accomplished, finished. See ability/inability.
2. Skilled or knowledgeable through long practice: experienced, old, seasoned, versed, veteran. Idioms: knowing the ropes. See ability/inability.
3. Resulting from experience or practice: practical. See knowledge/ignorance.

The adjective has 2 meanings:

Meaning #1: having or showing knowledge and skill and aptitude
  Synonyms: adept, expert, good, proficient, skillful, skilful

Meaning #2: skillful after much practice
  Synonym: practised