capable

able accomplished adept adequate competent efficient experienced gifted good intelligent proficient qualified skillful suited talented

adapted apt au fait clever dynamite fireball fitted green thumb has what it takes having know-how having the goods having the right stuff knowing the ropes knowing the score like a one-man band like a pistol masterly old hand old-timer on the ball proper there up up to it up to snuff up to speed veteran

clumsy green ignorant inadequate incapable incompetent ineffective inefficient inept inexperienced powerless stupid unable unintelligent unqualified unskilled unsuitable untalented useless weak

impotent unskillful