The meaning of PREVENT is to keep from happening or existing. How to use prevent in a sentence. Synonym Discussion of Prevent.

PREVENT definition: to keep from occurring; avert; hinder. See examples of prevent used in a sentence.

PREVENT definition: 1. to stop something from happening or someone from doing something: 2. to stop something from…. Learn more.

To prevent is to stop something effectually by forestalling action and rendering it impossible: to prevent the sending of a message. To hamper is to clog or entangle or put an embarrassing restraint upon: to …

Definition of prevent verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

prevent meaning, definition, what is prevent: to stop something from happening, or sto...: Learn more.

Definition of prevent. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

Nov 17, 2025 · prevent (third-person singular simple present prevents, present participle preventing, simple past and past participle prevented) I brush my teeth regularly to prevent tooth decay.

To prevent is to stop something effectually by forestalling action and rendering it impossible: to prevent the sending of a message. To hamper is to clog or entangle or put an embarrassing restraint upon: to …

The verb prevent means "to keep something from happening," like when you use a complicated password to prevent hackers from accessing your account.