prevent

[pri-vent] / prɪˈvɛnt /

VERB

keep from happening or continuing

Synonyms

STRONGEST

avert avoid bar block counter forbid forestall halt hamper hinder impede inhibit limit preclude prohibit put an end to restrain restrict rule out stop thwart ward off

STRONG

anticipate arrest baffle balk check chill cool cork counteract dam debar foil forfend frustrate intercept interdict interrupt obstruct obviate repress retard

WEAK

dead-end defend against head off hold back hold off keep lid on nip in the bud put a stop to shut out stave off turn aside

Antonyms

STRONGEST

advance aid allow approve assist continue encourage facilitate forward free help let go open permit promote push release support

STRONG

abet heat liberate warm

WEAK

cause

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.

This year, Saudi authorities are working to prevent the war from affecting the environment at the hajj.

From Barron's • May 25, 2026

"This study can help us understand more about why cancer develops in cats and humans, how the world around us influences cancer risk, and possibly find new ways to prevent and treat it," Wood said.

From Science Daily • May 24, 2026

The growing barrier is to prevent vehicles from accessing the area around the yellow line, the Israeli military said.

From The Wall Street Journal • May 24, 2026

Firefighters said they’re hopeful they can prevent an explosion.

From Los Angeles Times • May 23, 2026

The commander of the United States Navy Yard had ordered the buildings and warships there to be destroyed to prevent their capture.

From "In the Shadow of Liberty" by Kenneth C. Davis

Vocabulary lists containing prevent

"Handle with Care"

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!

The Search Is Over: Synonyms for "Stop"

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!

1.7.B Using Ice to Keep Orange Groves Warm

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!