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.

The suit states that "despite public knowledge of ChatGPT's use by minors, including preteens, defendants have not taken steps to prevent their use of ChatGPT."

From Barron's • Jun. 1, 2026

Illinois lawmakers approved a bill to prevent private-equity firms from influencing law firms, as more states consider limits on buyout deals in the legal field.

From The Wall Street Journal • Jun. 1, 2026

Although several treatments are available for people who already have rheumatoid arthritis, no approved therapy currently exists to prevent the disease in people who are known to be at high risk.

From Science Daily • Jun. 1, 2026

"As Unifil's mandate is about to expire, the Security Council must make a responsible decision to ensure the continued UN presence in Lebanon, and to prevent a security vacuum," said Fu Cong, China's UN envoy.

From Barron's • Jun. 1, 2026

It was the moment at which the end was written: the moment at which there was nothing left to prevent.

From "The Big Short" by Michael Lewis

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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