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- pronunciation:
- e
n
 r
ji
- features:
- Word Combinations (noun), Word History, Word Explorer, Word Parts
| part of speech: |
noun |
| inflections: |
energies |
| definition 1: |
the power or capacity for activity.
After a few days, the food and rest gave the soldier enough energy to get out of bed.- synonyms:
- force, might, power
- antonyms:
- inertia
- similar words:
- activity, dynamism, efficacy, potency, potentiality, puissance, strength
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| definition 2: |
a sufficient amount of such power.
He hardly had energy to finish the job.- synonyms:
- force, go, steam, vigor
- similar words:
- drive, effort, moxie, stamina, vitality
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| definition 3: |
power or heat from sources such as the sun, wind, petroleum, natural gas, or coal that can be put to use by humans.
Plants use the energy of the sun to grow.Wind is a source of energy.The cost of energy continues to rise.- similar words:
- power
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| definition 4: |
vigor; liveliness; vitality.
He spoke with energy on the subject of boat building.- synonyms:
- élan, brio, pep, verve, vigor, vim, vitality, zing, zip
- antonyms:
- fatigue, lethargy
- similar words:
- action, activity, animation, blood, bounce, emphasis, life, liveliness, sap, spirit, vivacity
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| related words: |
ability, activity, dynamic, exuberance, fire, force, initiative, main, might, output, pain, zeal |
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Energy is from energos, an ancient Greek word that means "active or working." The word "energy" was first used in the scientific sense of mechanical or electrical energy in the 1800s.
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conventionally associated with energy |
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conservation, effort, exhaustion, force, health, heart, might, pep, power, strength, vigor, youth, zip |
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person who studies energy |
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physicist |
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some descriptions of energy |
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atomic, chemical, electrical, hydroelectric, mechanical, nuclear, solar |
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some kinds of energy |
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atomic energy, electricity, nuclear energy, solar |
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some sources of energy |
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carbohydrate, chemical, coal, fire, food, fuel, gas, gasoline, light, natural gas, oil, plutonium, sun, uranium, water, wind |
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some things that produce energy |
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battery, engine, generator, windmill |
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some things that require energy |
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activity, concentration, electricity, labor, life, metabolism, play, work |
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some units for measuring energy |
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calorie, horsepower, kilowatt, watt |
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study of energy |
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physics |
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