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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.

A goal of the legislation is to block these cases from going forward and prevent new ones from being filed.

From Salon • Apr. 10, 2026

A Western diplomat said on condition of anonymity that there was ongoing "pressure from European states, Gulf states and Egypt on Israel to prevent renewed Israeli airstrikes on Beirut after 'Black Wednesday'".

From Barron's • Apr. 10, 2026

When she was 12, Margaret Knight started working in a textile mill, where she invented a safety device to stop the loom and prevent accidents.

From The Wall Street Journal • Apr. 9, 2026

Some believe his jumping is simply not up to scratch and will always prevent him from realising his potential.

From BBC • Apr. 9, 2026

ALL Egyptians should do what they can to prevent the Americans from taking Cleo away.

From "The (Mostly) True Story of Cleopatra's Needle" by Dan Gutman