Synonyms for Energetic (same or very similar meaning)
WordNet sense 1 (working hard to promote an enterprise):
industrious, up-and-coming, gumptious
WordNet sense 2 (marked by imagination, initiative, and readiness to undertake new projects):
enterprising
WordNet sense 3 (characterized by forceful and energetic action or activity):
vigorous
WordNet sense 4 (characterized by or performed with much energy or force):
strenuous
WordNet sense 5 (showing sustained enthusiastic action with unflagging vitality):
indefatigable, tireless
WordNet sense 6 (acting with vigor):
driving
WordNet sense 7 (quick and energetic):
brisk, lively
From the ODE community, based on WordNet
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