energy

noun
en·​er·​gy | \ ˈe-nər-jē \
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

Keep scrolling for more

Synonyms for energy

Synonyms

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

Visit the Thesaurus for More 

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.
See More

Recent Examples on the Web

As for the question of reliability, the study lets the state's current energy sources set the standard. David Grossman, Popular Mechanics, "Texas Could Easily Generate Most of Its Energy Through Wind And Solar, Study Finds," 3 Jan. 2019 DIYers can complete small projects around the house that help with energy efficiency. Brett Martin, House Beautiful, "Should You DIY Or Call A Pro?," 26 Dec. 2018 With the environment in mind, Indiana homeowners Kelsey and Tyler Johnston set out to build a house that sits lightly on its 8.5 acres, and incorporated as much green design tech (think: energy recovery ventilation systems) as possible. Asad Syrkett, Curbed, "Year in Curbed: The best of House Calls," 26 Dec. 2018 In one community, an organization had started a solar energy project in 2014 that was never completed. Mélissa Godin, Teen Vogue, "Climate Change Is Creating a New Atmosphere of Gender Inequality for Women in Malawi," 20 Dec. 2018 Fire energy fans your own flame, so over the next few weeks, look forward to lots of new opportunities to shine. Aliza Kelly Faragher, Allure, "What Your Sign's November Horoscope Predictions Mean for You," 28 Oct. 2018 Moreover, the weak force controls how often neutrinos interact with regular matter, which in turn has an effect on how energy drains from the interiors of stars. Charles Q. Choi, Space.com, "Why Alternate Universes Might Also Host Life Around their Stars," 26 Sep. 2018 Russia’s actions highlight the danger of giving Moscow more sway over Germany’s energy supply. Richard A. Grenell, WSJ, "Germans, Take a Stand Against Nord Stream 2," 16 Dec. 2018 And today's energy-efficient dishwashers have your hand-washing game beat, too. Lauren Piro, Good Housekeeping, "Every Reason to Stop Pre-Rinsing Dishes Before They Go in the Dishwasher," 13 Dec. 2018

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.

See More

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

Keep scrolling for more

Learn More about energy

Statistics for energy

Last Updated

14 Jan 2019

Look-up Popularity

Time Traveler for energy

The first known use of energy was in 1783

See more words from the same year

Keep scrolling for more

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 \
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 \
plural energies

Medical Definition of energy

2 : the capacity for doing work

Keep scrolling for more

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

What made you want to look up energy? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a complex dispute or argument

Get Word of the Day daily email!

Test Your Vocabulary

Homophone Quiz

  • three-bears-two-of-them-look-like-theyre-whispering-to-a-third-bear-who-looks-chuffed-to-be-the-center-of-attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!