- possessing or exhibiting energy, especially in abundance; vigorous: an energetic leader.
- powerful in action or effect; effective: to take energetic measures against crime.
Origin of energetic
1. See active.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- having or showing much energy or force; vigorous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for hyper-energetic
1650s, "powerful," from Greek energetikos "active," from energein "to work, act upon" (see energy). Of persons, "active," in English from 1796 (energetical is from c.1600).
Online Etymology Dictionary, © 2010 Douglas Harper