
Youthful
Age Neutral
Can describe someone older with young energy, not just the young.
The grandmother's youthful zest surprised everyone at the reunion.
Positive Energy
Often signals positivity and liveliness in character or actions.
His youthful enthusiasm made the team more optimistic.
Not Naive
'Youthful' implies vigor, but not necessarily inexperience or naivety.
Her youthful energy was an asset, even with her decade of experience.