sabotage

noun

1 the fire may have been an act of sabotage:

wrecking, deliberate damage, vandalism, destruction, obstruction, disruption, crippling, impairment, incapacitation;

rare ecotage.

2 this procedure is open to sabotage by an awkward participant:

disruption, spoiling, ruining, wrecking, undermining, filibustering, impairment, damage, subversion;

British, informal a spanner in the works;

North American, informal a monkey wrench in the works.

verb

1 a guerrilla group sabotaged the national electricity grid:

wreck, deliberately damage, vandalize, destroy, obstruct, disrupt, cripple, impair, incapacitate.

2 it would be very easy for me to sabotage your plans:

disrupt, spoil, ruin, wreck, undermine, filibuster, impair, damage, threaten, subvert;

British, informal throw a spanner in the works of, muller;

North American, informal throw a monkey wrench in the works of.

sabotage Oxford Dictionary of English