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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.

It has also carried out strikes on luxury hotels, radar installations, energy facilities in multiple countries, key ports, U.S. embassies across the region, and even Amazon data centers.

From The Wall Street Journal • Apr. 4, 2026

And nuclear energy seems to be back in fashion as part of a home-grown European energy mix - in the UK as well as the EU.

From BBC • Apr. 3, 2026

Even amid cataclysmic energy shocks and relentless spates of white-collar layoffs, the American economic engine appears to be humming along smoothly.

From Slate • Apr. 3, 2026

Nuclear development is a long-term project, not a short-term fix to current energy insecurity.

From BBC • Apr. 3, 2026

I go out with Rhys, even though I don’t have the energy to pretend I want to.

From "Red Flags and Butterflies" by Sheryl Azzam

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.