most experienced

accomplished capable competent mature professional qualified seasoned skillful sophisticated trained veteran wise

accustomed cultivated dynamite instructed matured practiced rounded sport tested tried versed vet

adept been around been there broken in expert familiar having something on the ball in the know knowing one's stuff knowing the score old old hand practical pro the right stuff well-versed worldly worldly-wise

amateur green ignorant incapable incompetent inept inexperienced unable unskilled unskillful untalented untrained

immature unfamiliar unknowledgeable unseasoned unsophisticated