- (US) vigor
- Active strength or force of body or mind; capacity for exertion, physically, intellectually, or morally; force; energy.
- Strength or force in animal or force in animal or vegetable nature or action;
- Strength; efficacy; potency.
Vigor and its derivatives commonly imply active strength, or the power of action and exertion, in distinction from passive strength, or strength to endure.