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.

Scientists have long believed that removing these protein deposits could slow or prevent the disease.

From Science Daily • May 4, 2026

Gray skies didn’t prevent L.A.’s arts community from getting fancy in support of the Hammer Museum’s annual Gala in the Garden.

From Los Angeles Times • May 3, 2026

"This tragedy once again underscores the need to find solutions to prevent dangerous journeys," it said on X.

From Barron's • May 3, 2026

Doctors routinely prescribe them for miscarriage management, endometriosis, fibroids, complications from Cushing’s disease and other serious reproductive health conditions, where they can prevent infection or reduce severe pain.

From Salon • May 2, 2026

He’s going to leave if I don’t do something to prevent it.

From "The Brightwood Code" by Monica Hesse

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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