ENERGETIC

adj. lively, active, vigorous, invigorated, dynamic, animated, spirited, untiring, tireless, indefatigable, sprightly, spry, vital, high-powered, brisk, vibrant, zesty, zestful, Colloq hot, peppy, full of pep, full of get-up-and-go, zippy, on one's toes, zingy, full of beans I feel most energetic at the start of the day