Synonyms and related words :
active, activist, activistic, alert, alive, alive and kicking, animate, animated, bouncing, bouncy, breezy, bright, bright-eyed and bushy-tailed, brisk, bubbly, cheep, chip, chirk, chirm, chirpy, chirrup, chirrupy, chitter, ebullient, effervescent, energetic, enjoying health, eupeptic, fine, fit, fit and fine, frisky, full of beans, full of go, full of life, full of pep, gay, healthful, healthy, in condition, in fine fettle, in fine whack, in good case, in good health, in good shape, in health, in high feather, in mint condition, in shape, in the pink, keen, live, lively, mercurial, militant, neat, orderly, peart, peep, peppy, perky, pert, quicksilver, shipshape, smacking, snappy, snug, spanking, spick-and-span, spirited, sprightly, spry, tidy, trig, trim, tweedle, tweet, twitter, uncluttered, vivacious, well-groomed, zingy