1.  preclude(v = verb.social) forbid, foreclose, forestall, prevent - 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"
Derived form noun preclusion₁
Sample sentences: Somebody ----s something; Something ----s something

2.  preclude(v = verb.stative) close out, rule out - make impossible, especially beforehand;
is one way to eliminate, obviate, rid of
Derived form adjective preclusive₁
Sample sentences: Something ----s something

1.  To put a barrier before; hence, to shut out; to hinder; to stop; to impede. [1913 Webster]
"The valves preclude the blood from entering the veins." [1913 Webster]

2.  To shut out by anticipative action; to prevent or hinder by necessary consequence or implication; to deter action of, access to, employment of, etc.; to render ineffectual; to obviate by anticipation. [1913 Webster]
"This much will obviate and preclude the objections." [1913 Webster]

preclude, v.tr.
1 (foll. by from) prevent, exclude (precluded from taking part).
2 make impossible; remove (so as to preclude all doubt).

Derivative:
preclusion n. preclusive adj.

Etymology:
L praecludere praeclus- (as PRAE-, claudere shut)

VB  hinder, impede, filibuster, impedite, embarrass, keep off, stave off, ward off, obviate, avert, antevert, turn aside, draw off, prevent, forefend, nip in the bud, retard, slacken, check, let, counteract, countercheck, preclude, debar, foreclose, estop, inhibit, shackle, restrict, obstruct, stop, stay, bar, bolt, lock, block, block up, choke off, belay, barricade, block the way, bar the way, stop the way, forelay, dam up, put on the brake, scotch the wheel, lock the wheel, put a spoke in the wheel, put a stop to, traverse, contravene, interrupt, intercept, oppose, hedge in, hedge round, cut off, inerclude, interpose, interfere, intermeddle, cramp, hamper, clog, clog the wheels, cumber, encumber, incumber, handicap, choke, saddle with, load with, overload, lay, lumber, trammel, tie one's hands, put to inconvenience, incommode, discommode, discompose, hustle, corner, drive into a corner, run foul of, fall foul of, cross the path of, break in upon, thwart, frustrate, disconcert, balk, foil, faze, feaze, feeze, baffle, snub, override, circumvent, defeat, spike guns, spoil, mar, clip the wings of, cripple, put an extinguisher on, damp, dishearten, discountenance, throw cold water on, spoil sport, lay a wet blanket, throw a wet blanket on, cut the ground from under one, take the wind out of one's sails, undermine, be in the way of, stand in the way of, act as a drag, hang like a millstone round one's neck.