Definitions

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.

Antioxidant preservatives serve a different purpose, helping to prevent oxidation so foods do not become brown or rancid.

From Science Daily • Jun. 18, 2026

Lineage Logistics has previously been accused of failing to comply with safety regulations to prevent the accidental release of anhydrous ammonia.

From Los Angeles Times • Jun. 18, 2026

Alternative producers should curtail supply to prevent a glut as the Gulf revs back up.

From Barron's • Jun. 18, 2026

That same year, Jones sought a preliminary injunction from a New York federal court to prevent 20th Century Fox and another record company from selling phonographs of the “I Have a Dream” speech.

From The Wall Street Journal • Jun. 17, 2026

But the barbed wrapping wasn’t only for weight; Sigurd had knotted and arranged it so it made a net around the outside, to prevent exactly what Anya was attempting.

From Anya and the Dragon by Sofiya Pasternack

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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