energetic

energetic · adjective¹

1. Ancient Greek · derived fromἐνεργητικός
2. New Latin · derived fromenergeticus
3. English todayenergetic

From New Latin energeticus (16th c.), or its source, Ancient Greek ἐνεργητικός (energētikós), from ἐνεργέω (energéō, “to be active”), from ἐνεργός (energós, “active”). By surface analysis, energy + -etic.

energetic · noun²

Possibly from a clipping of energetic materials.

First known use, by meaning

• from 19th c. Possessing or pertaining to energy.
• from 18th c. Characterised by force or vigour; full of energy; lively, vigorous, furious.
• 17th–20th c. Having powerful effects; efficacious, potent.