sprightly

Short definition from Wiktionary

Adjective

1. 1
   Animated, gay, or vivacious; lively, spirited.
2. 2
   Of a person: full of life and vigour, especially with a light and springy step.
3. 3
   Of a person: full of life and vigour, especially with a light and springy step: Especially of an older person: energetic and in good health; spry.
4. 4
   Of or relating to a sprite; ghostly, spectral.

Adverb

1. 1
   In a lively and vigorous way; sprightlily.