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.

These bursts are produced by groups of energetic electrons trapped within the Sun's powerful magnetic fields.

From Science Daily • May 23, 2026

“She was so powerful that she’s within us,” Treeams co-founder Pagliai said.

From Los Angeles Times • May 23, 2026

The SpaceX team celebrated after the launch of the most powerful and tallest rocket ever, and while the mission achieved most of its major objectives, it did not go exactly to plan.

From BBC • May 23, 2026

Many industry analysts estimate the U.S. is ahead by several months, claiming that the most powerful tools from Anthropic and ChatGPT maker OpenAI are better than models from China’s DeepSeek and others.

From The Wall Street Journal • May 23, 2026

“Wash yourself in the sea! We must make a powerful impression on the dragon. Dragons notice appearances, and you children look eighteen varieties of disgusting.”

From "Impossible Creatures" by Katherine Rundell

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