adj. 25B6; adjective LIVELY, vivacious, vibrant, full of life, vital, animated, high-spirited, sparkling, sprightly, energetic, active, vigorous, dynamic, dashing, enthusiastic, passionate; determined, resolute, purposeful; informal feisty, spunky, have-a-go, gutsy; N. Amer. informal peppy.
timid, apathetic, lifeless.