1) Acrobatic 2) Active 3) Brisk 4) Canty 5) Dynamic 6) Dynamical 7) Enterprising 8) Enthusiastic 9) Exciting 10) Fit 11) Forceful 12) Gogo 13) Gumptious 14) Gymnastic 15) Indefatigable 16) Lively 17) Peppy 18) Playful 19) Pushing 20) Spanking 21) Spirited 22) Spry 23) Strenuous 24) Tireless 25) Unflagging 1) Active 2) Agile 3) Animated 4) Brisk 5) Bubbly 6) Canty 7) Driving 8) Dynamic 9) Dynamical 10) Enterprising 11) Enthusiastic 12) Forceful 13) Full of beans 14) Full of pep 15) Go-go 16) Hearty 17) Indefatigable 18) Like a fireball 19) Lively 20) Merry 21) Nimble 22) Noisy 23) Over the top 24) Overexcited 
• (a.) Alt. of Energetical
exhibiting energy : strenuous; operating with force, vigour, or effect.
<chemistry, physiology> Exhibiting energy: strenuous, operating with force, vigour or effect. ... (18 Nov 1997) ... 
[adj] - working hard to promote an enterprise 2. [adj] - possessing or exerting or displaying energy
gumptious adjective working hard to promote an enterprise
possessing or exhibiting energy, esp. in abundance; vigorous: an energetic leader. · powerful in action or effect; effective: to take energetic measures against crime.