Synonyms for prevent
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- 1. prevent, forestall, foreclose, preclude, forbid
- usage: keep from happening or arising; make impossible; "My sense of tact forbids an honest answer"; "Your role in the projects precludes your involvement in the competitive project"
- 2. prevent, keep
- usage: stop (someone or something) from doing something or being in a certain state; "We must prevent the cancer from spreading"; "His snoring kept me from falling asleep"; "Keep the child from eating the marbles"