competent

Synonyms: adapted adequate all around appropriate au fait being a pistol capable clever complete crisp decent dynamite efficient endowed enough equal fireball fit fool good know ins and outs know one’s business know one’s stuff know the answers know the ropes know the score no slouch on the ball paid one’s dues pertinent polished proficient qualified satisfactory savvy skilled sufficient suitable there up to it up to snuff up to speed wicked

Antonyms: inadequate incapable incompetent inefficient inept unable