Synonyms of prevent

Verb

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"

Definition and meaning of prevent (Dictionary)