The quality or state of being able; capacity to do or of doing something; having the necessary power.
A unique power of the mind; a faculty.
A skill or competence in doing; mental power; talent; aptitude.
Physical power.
The legal wherewithal to act.
The quality or state of being inflexible
Obstinacy of will or temper; firmness of purpose that will not yield to importunity or persuasion; unbending pertinacity.