"preventing" in the verb sense
1. prevent, forestall, foreclose, preclude, forbid
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
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"
Source: WordNet® (An amazing lexical database of English)
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