DictionaryRoot: en-
Greek

en-

in, within

Forms

  • en-
  • em- — Used before b, m, or p in Greek compounds.
  • el- — Used before l in Greek compounds.

Origin

Reconstructed Proto-Indo-European *en, ‘in.’

Note

Related to Latin in-, but borrowed through a separate Greek route.

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adjective

energetic

en-er-JET-ik/ˌenərˈdʒetɪk/

Active and full of energy.

The energetic man springs into a jumping jack with a lively smile.

A young man performs an exuberant jumping jack, springing off the ground with arms raised, legs spread, and a broad, lively smile.
Etymology

The underlying image is being at work or in action. Energetic first described something powerful in operation, then came to describe people showing abundant activity and vitality.

In context

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What if it's not that less sleep leads to more energy, but instead people who feel more energetic tend to sleep less?
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More examples

  • I feel more energetic after a good night's sleep.
  • The band gives an energetic performance.
  • We need an energetic volunteer to lead the games.

Forms

energetic · more energetic · most energetic

energetically adverb — In an active and lively way.

Similar words

lively
Emphasizes animation and high spirits rather than sustained effort.
vigorous
Emphasizes strength and force in movement or effort.
active
Emphasizes doing things, without necessarily showing abundant energy.