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.

Prime Minister Sanae Takaichi said transferring Japanese defense technology to friendly countries would bolster Japan’s own security and help prevent conflict.

From The Wall Street Journal • Apr. 22, 2026

The decision not to carry out fresh attacks on Iran but continue to prevent its ships from passing through the Strait -- a major sticking point between the rivals -- left traders awaiting clearer developments.

From Barron's • Apr. 22, 2026

UBS bought Credit Suisse in a government-engineered rescue in 2023 and politicians there have vowed to prevent a repeat.

From The Wall Street Journal • Apr. 22, 2026

Changes to restrictions of energy have been introduced to prevent cars arriving at the grid with low battery levels.

From BBC • Apr. 20, 2026

A number of smoke-producing lime pots, designed to be thrown onto the deck of an attacking vessel as well as to prevent the Mary Rose from being boarded were also salvaged.

From "Shipwrecked!" by Martin W. Sandler

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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