skill
ability, accomplishment, adroitness, aptitude, art, cleverness, competence, craft, dexterity, experience, expertise, expertness, facility, finesse, handiness, ingenuity, intelligence, knack, proficiency, quickness, readiness, skilfulness, talent, technique
Antonyms
awkwardness, brute force, cack-handedness, clumsiness, gaucheness, ham-fistedness, inability, incompetence, ineptitude, inexperience, lack of finesse, maladroitness, unhandiness