What does "sprightful" mean?

Sprightful: Full of spirit or of life; earnest; vivacious; lively; brisk; nimble; gay. [Obs.] -- Spright"ful*ly, adv. [Obs.] Shak. -- Spright"ful*ness, n. [Obs.] Spoke like a sprightful gentlemen. Shak. Steeds sprightful as the light. Cowley.

Sources