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.

Researchers in Germany are warning that ordinary WiFi networks could become a powerful new form of invisible surveillance.

From Science Daily • May 23, 2026

"The technology is powerful, but at the same time entails risks to our fundamental rights, especially to privacy," emphasizes Strufe.

From Science Daily • May 23, 2026

Montpellier were hammering the line and Nouchi was next to score with a powerful drive.

From BBC • May 22, 2026

It is looking to start doing so in the second half of the year, using the upgraded Starship to deploy powerful Starlink satellites to low-Earth orbit, according to its stock prospectus.

From The Wall Street Journal • May 22, 2026

That simple affirmation must have given Mrs. Redfield powerful comfort.

From "American Spirits" by Barb Rosenstock

Vocabulary lists containing powerful

In the Mood? 100 Words to Describe Emotions

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Hooked on a Feeling, List 1

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Words to Describe a Movie

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!