vigour

noun

1. active strength or force.
2. healthy physical or mental energy or power; vitality.
3. energetic activity; energy; intensity: The economic recovery has given the country a new vigor.
4. force of healthy growth in any living matter or organism, as a plant.
5. active or effective force, especially legal validity.

noun

1. exuberant and resilient strength of body or mind; vitality
2. substantial effective energy or forcethe vigour of the tempest
3. forcefulness; intensitythe vigour of her complaints
4. the capacity for survival or strong healthy growth in a plant or animalhybrid vigour
5. the most active period or stage of life, manhood, etc; prime
6. mainly US legal force or effectiveness; validity (esp in the phrase in vigour)

n.

chiefly British English spelling of vigor (q.v.); for spelling, see -or.

n.

c.1300, from Anglo-French vigour, Old French vigor, from Latin vigorem (nominative vigor) “liveliness, activity, force,” from vigere “be lively, flourish, thrive,” from PIE *wog-/*weg- “be lively or active” (see vigil).

see vim and vigor.