aged or processed; "seasoned wood"[ant: unseasoned ]

rendered competent through trial and experience; "a seasoned traveler"; "veteran steadiness"; "a veteran officer"

adjective

accomplished , adept , battle-scarred , been around , been there , competent , expert , familiar , hardened , instructed , knowledgeable , matured , old hand * , practiced , prepared , pro , professional , qualified , skillful , tested , toughened , trained , tried , vet , veteran , weathered , wise , worldly , worldly wise , old , versed , aged , experienced