This is the 799th most frequent French word.
vigueur
Strength, energy, or force.
Here, 'vigueur' refers to the act of a law or regulation becoming active or enforceable.
Cette loi est entrée en vigueur hier.
This law came into effect yesterday.
In this context, 'vigueur' means energy or force in accomplishing something.
Il travaille avec beaucoup de vigueur.
He works with a lot of energy.
Here, 'vigueur' is used to denote the physical strength or vitality of a living being or element.