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Synonyms

energize

American  
[en-er-jahyz] / ˈɛn ərˌdʒaɪz /
especially British, energise

verb (used with object)

energized, energizing
  1. to give energy to; rouse into activity.

    to energize the spirit with brave words.

  2. to supply electrical current to or store electrical energy in.


verb (used without object)

energized, energizing
  1. to be in operation; put forth energy.

energize British  
/ ˈɛnəˌdʒaɪz /

verb

  1. to have or cause to have energy; invigorate

  2. (tr) to apply a source of electric current or electromotive force to (a circuit, field winding, etc)

"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

Other Word Forms

  • energizer noun
  • reenergize verb (used with object)
  • superenergized adjective
  • unenergized adjective

Etymology

Origin of energize

First recorded in 1745–55; energ(y) + -ize

Explanation

Energize means to raise the energy level of something. If your really boring teacher suddenly starts throwing M&Ms to every student with a correct answer, he will energize the classroom. Ever seen the Energizer Bunny––the one who "keeps going and going and going?" It's because he's energized by long-lasting batteries that he has the energy to beat that drum over and over. Someone who's feeling low on energy might be reenergized by a cat nap or a candy bar.

Keep Reading on Vocabulary.com

Vocabulary lists containing energize

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.

The race has become a test of strategy: Crockett argues her combative style will energize turnout, while Talarico presents himself as a bridge to moderates and disaffected Republicans.

From Barron's • Mar. 3, 2026

These charged particles energize atmospheric gases, causing them to glow.

From Science Daily • Feb. 17, 2026

Downtown L.A. is doing better than you think it is, but the government needs to do more to energize the city, said one of the region’s longest and most successful real estate leaders.

From Los Angeles Times • Dec. 24, 2025

It may — but it will also energize everyone else.

From Salon • Dec. 10, 2025

The challenge then becomes timing the electrical impulses so they energize the gap at the very moment the particles cross, which means generating them from an oscillator working at a fixed frequency.

From "Big Science" by Michael Hiltzik