capable

Synonyms: able accomplished adapted adept adequate apt au fait clever competent dynamite efficient experienced fireball fitted gifted good green thumb has what it takes having know-how having the goods having the right stuff intelligent knowing the ropes knowing the score like a one-man band like a pistol masterly old hand old-timer on the ball proficient proper qualified skillful suited talented there up up to it up to snuff up to speed veteran

Antonyms: impotent incapable incompetent inept unable unskilled unskillful