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Definitions

energy

[en-er-jee] / ˈɛn ər dʒi /
NOUN
person's spirit and vigor
Synonyms
STRONGEST
efficiency intensity power spirit stamina strength toughness vitality
STRONG
activity animation application ardor birr dash drive effectiveness efficacy endurance enterprise exertion fire force forcefulness fortitude get-up-and-go go hardihood initiative juice life liveliness might moxie muscle pep pizazz pluck potency puissance punch spontaneity steam tuck vehemence verve vim virility vivacity zeal zest zing zip
WEAK
operativeness élan
Antonyms
STRONGEST
apathy impotence inability incompetence inefficiency lack laziness lethargy weakness
STRONG
cowardice dispiritedness dullness idleness inactivity indifference indolence ineffectiveness lifelessness powerlessness uselessness
WEAK
tiredness
NOUN
generated power
Synonyms
STRONGEST
dynamism electricity heat potential service strength
STRONG
application burn conductivity current force friction gravity horsepower juice kilowatts magnetism pressure radioactivity rays reaction response steam voltage wattage
Antonyms
STRONGEST
lack
STRONG
peace question
WEAK
idleness inactivity laziness lethargy tiredness

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.

SpaceX, after years of looking to Mars, has reallocated staff and energy to the moon as well.

From The Wall Street Journal • Apr. 15, 2026

Still, many are hopeful that U.S. growth will prove strong enough to shake off the burden of higher energy prices.

From The Wall Street Journal • Apr. 15, 2026

Your internal body clock affects sleep-wake patterns and hormone and energy levels across the day, which, in turn, could influence exercise performance and adherence, explain the researchers.

From BBC • Apr. 14, 2026

Core producer prices, excluding food and energy, rose 0.1% in March.

From Barron's • Apr. 14, 2026

This energy remained trapped in layers of atmosphere for twenty to thirty miles away from the volcano.

From "Mountain of Fire" by Rebecca E. F. Barone

Vocabulary lists containing energy

Quantum of Vocabulary: the Parlance of Particle Physics

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Albert Einstein

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List 1

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