preclude

To preclude something is to prevent it from happening. A muzzle precludes a dog from biting.

This is a very formal word, but it has a simple meaning: when something is precluded, it can't happen. See the prefix pre in preclude and in prevent? It is signaling that these words are all about things done before another action would happen — to make it impossible. Staying away from water precludes the possibility of drowning, though it also precludes any chance of having fun swimming.

Definitions of preclude
  1. verb
    make impossible, especially beforehand
    synonyms: close out, rule out
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    type of:
    eliminate, obviate, rid of
    do away with
  2. verb
    keep from happening or arising; make impossible
    “Your role in the projects precludes your involvement in the competitive project”
    synonyms: forbid, foreclose, forestall, prevent
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    types:
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    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, scuttle, spoil, thwart
    hinder or prevent (the efforts, plans, or desires) of
    block, halt, kibosh, stop
    stop from happening or developing
    stonewall
    obstruct or hinder any discussion
    disappoint, let down
    fail to meet the hopes or expectations of
    embargo
    prevent commerce
    filibuster
    obstruct deliberately by delaying
    check
    block or impede (a player from the opposing team) in ice hockey
    hang
    prevent from reaching a verdict, of a jury
    bottleneck
    slow down or impede by creating an obstruction
    dash
    destroy or break
    short-circuit
    hamper the progress of; impede
    ruin
    destroy or cause to fail
    stay
    stop a judicial process

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