prevent

Keep from happening

Prevent means to stop something from happening or someone from doing something.

You prevent accidents, prevent disease, or prevent someone from entering.

The word implies action taken in advance—you can't prevent what has already occurred.

Prevention is the noun: an ounce of prevention is worth a pound of cure.

avert

forestall

Prevent by prior action

preempt · deflect · stave off · head off · ward off · fend off · nip in the bud · sidestep · obviate · anticipate

block

impede

To obstruct movement

stymie · halt · stop · hamper · inhibit · stall · interfere · frustrate · check · disrupt

forbid

prohibit

Formally disallow

  • banOfficial restriction on something
  • barDrinking establishment
  • disallowRefuse to permit

proscribe · outlaw · veto · interdict · embargo · enjoin · debar · exclude · restrict · criminalize

protect

safeguard

Precaution against harm

  • shieldHandheld defensive armor
  • guardWatchful defensive attention
  • defendProtect from harm

secure · preserve · fortify · insulate · immunize · vaccinate · inoculate · fireproof · childproof · waterproof

Categories
Opposites
permission/obstruction

preventallow

Grant permission for

permit · let · authorize · sanction · greenlight

causation

preventcause

What produces an effect

enable · facilitate · bring about · trigger · incite

facilitation

preventfacilitate

Make something easier

help · assist · aid · encourage · promote

Phrases
Family

prevented, prevention, preventing, prevents, preventive, preventative, preventable, unpreventable, preventer

Familiarity
Top 2,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G