n.
1.
Power (to execute anything), ableness, force, potency, might, vigor, efficiency, efficacy, strength, energy, skill, skilfulness, dexterity, address, adroitness, cleverness, ingenuity, talent, aptitude, aptness, knack, expertness, facility, quickness, readiness.
2.
Qualification, competency, sufficiency.
3.
Capability, capableness, faculty, gift, parts, genius, endowment, calibre, forte, turn.
See capacity.