/ Thesaurus / H Synonyms of high energy Find synonyms for: Adjective1. high-energyusage: of or relating to elementary particles having energies of hundreds of thousands of electron volts2. high-energy, energetic (vs. lethargic)usage: providing a relatively large amount of energy upon undergoing a chemical reaction3. high-octane, high-powered, high-power, high-voltage, high-energy, dynamic (vs. undynamic), dynamicalusage: vigorously energetic or forceful; "a high-octane sales manager"; "a high-octane marketing plan"; "high-powered executives"; "a high-voltage theatrical entrepreneur"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language