vigor Definition

vigour
vigor
noun

1. Great strength and energy of body or mind.

Thesaurus: health, energy, hardiness, stamina, endurance, vitality, gusto, robustness; Antonym: feebleness, decrepitude.
2. Liveliness or forcefulness of action.

Thesaurus: force, intensity, lustiness, vim, strength, determination, drive, vehemence; Antonym: weakness, impotence, slothfulness.
3. In plants, etc: healthy growth.

Etymology: 14c: from Latin vigor, from vigere to be strong.