energy

noun
en·​er·​gy | \ ˈe-nər-jē How to pronounce energy (audio) \
plural energies

Definition of energy

1a : dynamic quality narrative energy
b : the capacity of acting or being active intellectual energy
c : a usually positive spiritual force the energy flowing through all people
2 : vigorous exertion of power : effort investing time and energy
3 : a fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work
4 : usable power (such as heat or electricity) also : the resources for producing such power

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Synonyms for energy

Synonyms

aura, chi (or ch'i), ki, vibe(s), vibration(s)

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Choose the Right Synonym for energy

power, force, energy, strength, might mean the ability to exert effort. power may imply latent or exerted physical, mental, or spiritual ability to act or be acted upon. the awesome power of flowing water force implies the actual effective exercise of power. used enough force to push the door open energy applies to power expended or capable of being transformed into work. a worker with boundless energy strength applies to the quality or property of a person or thing that makes possible the exertion of force or the withstanding of strain, pressure, or attack. use weight training to build your strength might implies great or overwhelming power or strength. the belief that might makes right

Examples of energy in a Sentence

The kids are always so full of energy. They devoted all their energy to the completion of the project. They devoted all their energies to the completion of the project. She puts a lot of energy into her work. The newer appliances conserve more energy.
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Recent Examples on the Web

Playing with great energy, making good decisions, but more importantly, managing the game, taking care of the ball. Stephen Means, cleveland.com, "Everything Ryan Day said after Ohio State’s 45-21 win over Florida Atlantic," 31 Aug. 2019 The first focuses on public lands, the second on how the military can help combat climate change, the third on green manufacturing, the fourth on a transition to clean energy, and the last looks at trade. Natasha Bach, Fortune, "Ten 2020 Candidates Will Debate in CNN’s Climate Crisis Debate Next Week. Here’s Where They Stand," 31 Aug. 2019 The energy of the largest protest, the Women’s March that took place globally the day after the inauguration, translated into the largest-ever number of women running and winning. Kathleen Townsend, Washington Post, "Women ran. Women won. Women changed the rules of American politics.," 30 Aug. 2019 Hailey's photos, and energy, are a close match to the Princess Di ones. Marina Liao, Marie Claire, "Hailey Baldwin Recreates Princess Diana's Iconic Outfits," 29 Aug. 2019 In our college town there have been enough conferences on renewable energy, soil carbon sequestration, regenerative agriculture, and green economy ideas to wallpaper the entire town with event flyers. Teen Vogue, "Greta Thunberg Has Already Changed the United States for the Better for Teen Climate Activists Like Us," 29 Aug. 2019 Even the most mundane moments in Control are suffuse with a surreal energy, a sense that anything could happen around the next bend. Wired, "Control Is a Paranoiac's Dream Turned Into a Videogame," 29 Aug. 2019 Her retreats in Zimbabwe, Mozambique, and Spain are grounded in workshops imparting the ancient modality of Lu Jong, which combines muscle, mind, energy, and breathing. Daisy Finer, Condé Nast Traveler, "Biomarkers, Sweat Lodges, and Shamans: Today's Wellness Retreats Go Far Beyond a Detox," 26 Aug. 2019 The two states have almost identical energies, so the difference that the photon makes up is quite small. Davide Castelvecchi, Scientific American, "The Quest to Unlock the Secrets of the Baby Universe," 26 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'energy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of energy

1783, in the meaning defined at sense 1a

History and Etymology for energy

Late Latin energia, from Greek energeia activity, from energos active, from en in + ergon work — more at work

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Statistics for energy

Last Updated

5 Sep 2019

Look-up Popularity

Time Traveler for energy

The first known use of energy was in 1783

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More Definitions for energy

energy

noun

English Language Learners Definition of energy

: ability to be active : the physical or mental strength that allows you to do things
: natural enthusiasm and effort
: usable power that comes from heat, electricity, etc.

energy

noun
en·​er·​gy | \ ˈe-nər-jē How to pronounce energy (audio) \
plural energies

Kids Definition of energy

1 : ability to be active : strength of body or mind to do things or to work The children … were tired and hardly had energy enough to walk.— E. B. White, Charlotte's Web
2 : strong action or effort He puts a lot of energy into his work.
3 : usable power or the resources (as oil) used to produce usable power Our new dryer uses a lot less energy.

energy

noun
en·​er·​gy | \ ˈen-ər-jē How to pronounce energy (audio) \
plural energies

Medical Definition of energy

2 : the capacity for doing work

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More from Merriam-Webster on energy

Thesaurus: All synonyms and antonyms for energy

Spanish Central: Translation of energy

Nglish: Translation of energy for Spanish Speakers

Britannica English: Translation of energy for Arabic Speakers

Comments on energy

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