Definitions

powerful

[pou-er-fuhl] / ˈpaʊ ər fəl /

ADJECTIVE

strong, effective

Synonyms

STRONGEST

all-powerful authoritative capable compelling dominant dynamic energetic forceful impressive influential mighty persuasive potent robust vigorous

WEAK

able almighty authoritarian big-wheel cogent commanding competent controlling convincing effectual efficacious forcible in control in the saddle omnipotent overruling paramount preeminent prevailing puissant ruling sovereign stalwart strapping strengthy sturdy supreme telling upper hand weighty wicked wieldy

Antonyms

STRONGEST

idle impotent inactive incapable ineffective ineffectual insignificant lethargic unimportant weak

WEAK

unable

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.

Powerful new observatories, including the Vera C. Rubin Observatory and the Nancy Grace Roman Space Telescope, are expected to dramatically expand the search for these repeating lensing events in the coming years.

From Science Daily • Jun. 5, 2026

Powerful and physical and causing problems in Scotland's defence, they were comfortable.

From BBC • May 30, 2026

Powerful companies across business sectors have expressed discontent with the state’s business environment.

From Los Angeles Times • Apr. 14, 2026

Powerful blasts shook the Iranian capital on Thursday.

From Barron's • Apr. 2, 2026

“I’m already aware of Madam Lucille and her Powerful, All-Seeing Eye.”

From "The Detective's Assistant" by Kate Hannigan

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