prevent

1. Keep from happening or arising;
   Make impossible (synset 202458316)
   "My sense of tact forbids an honest answer"; "Your role in the projects precludes your involvement in the competitive project"
   subtypes:

   • inhibit - prohibit, forbid, or prevent from doing something
   • make unnecessary, save - make unnecessary an expenditure or effort
   • avert, avoid, debar, deflect, fend off, forefend, forfend, head off, obviate, stave off, ward off - prevent the occurrence of; prevent from happening
   • block, blockade, embarrass, hinder, obstruct, stymie, stymy - hinder or prevent the progress or accomplishment of
   • baffle, bilk, cross, foil, frustrate, queer, scotch, spoil, thwart - hinder or prevent (the efforts, plans, or desires) of
   • block, halt, kibosh, stop - stop from happening or developing
   same as: forbid, foreclose, forestall, preclude
2. Stop (someone or something) from doing something or being in a certain state (synset 202455370)
   "We must prevent the cancer from spreading"; "His snoring kept me from falling asleep"; "Keep the child from eating the marbles"
   subtypes:

   • defend - be on the defensive; act against an attack
   • exclude, keep out, shut, shut out - prevent from entering; shut out
   • restrict - prevent (information) from being circulated or disclosed
   • hold - keep from departing
   • keep away - prevent from coming close
   • restrain - prevent (someone or something) from doing something
   • blank - keep the opposing (baseball) team from winning
   • hinder, impede - be a hindrance or obstacle to
   • rain out, wash out - prevent or interrupt due to rain
   same as: keep
   verb group: keep - hold and prevent from leaving

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