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Definition prevent in British English

prevent verb

[transitive] verb
/prɪˈvent/

The verb prevent is never followed by an infinitive. Use the patterns prevent someone/something doing something or prevent someone/something from doing something:

✗ They tried to prevent me to leave.

✓ They tried to prevent me leaving.

✓ They tried to prevent me from leaving.

Prevent can also be used with a direct object:

The main task of the police is to detect and prevent crime.

1

to stop something from happening

Example

Regular cleaning may help prevent infection.

Example

If necessary, add a little water to prevent sticking.

Example

Rubber seals are fitted to prevent gas from escaping.

Synonyms and related words
2

to stop someone from doing something

Example

We tried to prevent her, but she was determined to go.

Example

The owner is prevented by law from making any major changes.

Example

She was sure the noise would prevent her sleeping at night.

Synonyms and related words
Definition prevent in British English