energy

noun

en·​er·​gy ˈe-nər-jē How to pronounce energy (audio)
plural energies
1
a
: 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
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.
Recent Examples on the Web But for all the flash, there was an organic energy to it all, and Bad Bunny made LCA feel like a nightclub hot spot. Brian McCollum, Detroit Free Press, 7 Apr. 2024 That's because the rocks in the Earth's crust in the east are older and more rigid, causing seismic energy to travel more efficiently, according to the agency. Meredith Deliso, ABC News, 5 Apr. 2024 The ancient eastern faults have also stored up a lot of energy over time. Matt Simon, WIRED, 5 Apr. 2024 Some Hindus who see eclipses as inauspicious fast before and bathe after the celestial event — sometimes with their clothes on — to clear themselves of negative energies, Kowsik says. Harmeet Kaur, CNN, 5 Apr. 2024 Each station captures data about how much the earth moves and vibrates during a temblor and how much energy moves out from the hypocenter, or the site of an earthquake under the planet's surface. Kerry Breen, CBS News, 5 Apr. 2024 Soft lofts are generally more energy efficient than hard lofts counterparts due to their newer construction and materials. Cori Sears, Better Homes & Gardens, 5 Apr. 2024 The Sun Did It!, 10 a.m. at Indiana Dunes State Park: Visit the park’s nature center to make a solar memento and learn about solar energy. Karl Schneider, The Indianapolis Star, 5 Apr. 2024 The energy and industrial sectors are responsible for two-thirds of total emissions, followed by the transport, building and agriculture sectors. Min Joo Kim, Washington Post, 1 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'energy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

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

First Known Use

1783, in the meaning defined at sense 1a

Time Traveler
The first known use of energy was in 1783

Dictionary Entries Near energy

Cite this Entry

“Energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/energy. Accessed 12 Apr. 2024.

Kids Definition

energy

noun
en·​er·​gy ˈen-ər-jē How to pronounce energy (audio)
plural energies
1
: power or ability to be active : strength of body or mind to do things or to work
a teacher of great intellectual energy
2
: natural power exerted with force : lively action
work with energy
3
: the capacity (as of heat, light, or running water) for doing work
4
a
: usable power (as heat or electricity)
b
: a source of energy
especially : a resource (as oil) used to provide energy

Medical Definition

energy

noun
en·​er·​gy ˈen-ər-jē How to pronounce energy (audio)
plural energies
1
2
: the capacity for doing work

More from Merriam-Webster on energy

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