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.

A new study has found that some of the ocean's most powerful predators are running hotter than expected, and the consequences could be severe.

From Science Daily • Apr. 18, 2026

The papers caught the attention of Thomas Edison, then 40 years old, rumpled, ascetic and already the most powerful figure in American electrical innovation.

From The Wall Street Journal • Apr. 18, 2026

The UK's AI Safety Institute recently concluded that while a very powerful model, its biggest threat would be against poorly defended, vulnerable systems.

From BBC • Apr. 17, 2026

In the Muse Spark announcement, Meta also hinted to larger and more powerful AI models in development, as well as enhanced AI glasses.

From MarketWatch • Apr. 17, 2026

I decided to win her over with my charm, so I smiled up at her with a powerful grin that showed all my teeth.

From "The Detective's Assistant" by Kate Hannigan

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