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.

He feels "responsibility to prevent" these thoughts by "performing compulsions", and uncertainty plays a "viscious role".

From BBC • Apr. 17, 2026

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 measures are intended to prevent Lake Powell from falling so low that water would no longer reach intakes to turn turbines and generate electricity — a point it could have reached by August.

From Los Angeles Times • 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

The crew immediately yelled several colorful phrases as they tried to prevent the PVC from messing up the newly poured concrete.

From "Boy 2.0" by Tracey Baptiste

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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