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.

Now, scientists are learning more about why these episodes happen, how to differentiate more-common causes from more-serious issues, and which treatments can prevent or reduce recurrence.

From The Wall Street Journal • Apr. 17, 2026

The driver of the vehicle, unaware that the SUV riding the shoulder was a federal agent, partially blocked the shoulder to prevent the SUV from cutting off the Cadillac.

From Slate • Apr. 17, 2026

She said this was one of two great success stories of the pandemic - the other being the use of a cheap and a readily-available steroid drug called dexamethasone to prevent fatal lung damage.

From BBC • Apr. 16, 2026

Until then, persistent geopolitical tensions may prevent a clear price move in one direction or the other.

From Barron's • Apr. 16, 2026

And not just a Cocoon, but one that made it clear that Elliot and I were supposed to prevent something bad from happening.

From "Glitch" by Laura Martin

Vocabulary lists containing prevent

"Handle with Care"

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The Search Is Over: Synonyms for "Stop"

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1.7.B Using Ice to Keep Orange Groves Warm

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