noun
vigor
VIG-er/ˈvɪɡər/
Active strength or force.
The man lifts a full gardening basket with impressive vigor.

Etymology
The Latin noun vigor tied strength to liveliness and activity. That connection survives in the English sense of bodily energy and active force.
In context
we're seeing a renewed level of energy and vigor from businesses around solving food waste
More examples
- After a short break, we return to work with renewed vigor.
- She defends her proposal with vigor.
- Regular watering helps these plants maintain their vigor.
Forms
vigorous adjective — Full of strength, energy, or force.
vigorously adverb — With great strength, energy, or force.