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Definitions

energetic

[en-er-jet-ik] / ˌɛn ərˈdʒɛt ɪk /
ADJECTIVE
full of life; forceful
Synonyms
STRONGEST
active aggressive dynamic enterprising industrious lively powerful spirited sprightly spry strong tireless vigorous
WEAK
animated ball of fire breezy brisk demoniac driving forcible fresh hardy high-powered indefatigable kinetic lusty peppy potent red-blooded rugged snappy stalwart strenuous sturdy tough unflagging untiring vital vivacious zippy
Antonyms
STRONGEST
apathetic dispirited dull easygoing idle impotent inactive laid-back lazy lethargic passive weak
WEAK
lifeless slow sluggish tired

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.

Then in 2023, the KM3NeT Collaboration detected the extremely energetic neutrino.

From Science Daily • Apr. 8, 2026

Those humble beginnings have created a character who is passionate, energetic and provides effort, desire and commitment - all of which were evident in that stunning display against City.

From BBC • Mar. 11, 2026

He poached energetic servers from competitors and encouraged them to recruit friends.

From The Wall Street Journal • Mar. 6, 2026

At a busy health centre in Shanghai, Yan Sulian, an energetic 65-year-old volunteer, helped older patients with electronic registration.

From Barron's • Mar. 3, 2026

Beagles are energetic, and these people looked like the type who liked constant calm.

From "Please Ignore Vera Dietz" by A.S. King