Dictionary.com
Thesaurus.com
Synonyms

energetic

American  
[en-er-jet-ik] / ˌɛn ərˈdʒɛt ɪk /
Sometimes energetical

adjective

  1. possessing or exhibiting energy, especially in abundance; vigorous.

    an energetic leader.

  2. powerful in action or effect; effective.

    to take energetic measures against crime.

    Synonyms:
    potent, strong, effectual

energetic British  
/ ˌɛnəˈdʒɛtɪk /

adjective

  1. 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

Related Words

See active.

Other Word Forms

  • energetically adverb
  • hyperenergetic adjective
  • nonenergetic adjective
  • nonenergetically adverb
  • quasi-energetic adjective
  • quasi-energetically adverb
  • superenergetic adjective
  • superenergetically adverb
  • ultraenergetic adjective
  • unenergetic adjective
  • unenergetically adverb

Etymology

Origin of energetic

First recorded in 1645–55; from Greek energētikós, from energē- (from en- en- 2 + ergē-, variant stem of ergeîn “to be active”; energy ) + -tikos -tic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Unfortunately, it provides limited protection from the solar wind, allowing energetic particles from the Sun to reach the surface more easily.

From Science Daily • Mar. 14, 2026

Those humble beginnings have created a character who is passionate, energetic and provides effort, desire and commitment - all of which were evident in that stunning display against City.

From BBC • Mar. 11, 2026

At a busy health centre in Shanghai, Yan Sulian, an energetic 65-year-old volunteer, helped older patients with electronic registration.

From Barron's • Mar. 3, 2026

The negativity dissipates as a young man walks into the clubhouse, baseball cap on backward for the moment, energetic and respectful and joyful and supremely confident.

From Los Angeles Times • Mar. 2, 2026

Stick and I stood quiet, the children’s energetic whoops and giggles swirling around us.

From "The Rock and the River" by Kekla Magoon