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sabotage |ˈsabəˌtä zh |
verb [ trans. ]
deliberately destroy, damage, or obstruct (something), esp. for political or military advantage.
they were hired to sabotage the competition vandalize, wreck, damage, destroy, cripple, impair, incapacitate; obstruct, disrupt, spoil, ruin, undermine, threaten, subvert.

noun
the action of sabotaging something.
ORIGIN early 20th cent.: from French, from saboter ‘kick with sabots, willfully destroy’ (see sabot ).
the fire may have been an act of sabotage vandalism, wrecking, destruction, impairment, incapacitation, damage; subversion, obstruction, disruption, spoiling, undermining; informal a (monkey) wrench in the works.