1. [ verb ] keep from happening of arising; have the effect of preventing
Synonyms: forestall preclude forbid foreclose

"My sense of tact forbids an honest answer"

Related terms: stop debar thwart save obstruct obviation
2. [ verb ] prevent from doing something or being in a certain state
Synonyms: keep

"We must prevent the cancer from spreading" "His snoring kept me from falling asleep" "Keep the child from eating the marbles"

Related terms: let defend restrain exclude impede keep_away rain_out hold blank keep prevention
Similar spelling:   preventive