sabotagesab·o·tage /ˈsæbətɑːʒ/ verb [transitiveT]1to secretly damage or destroy equipment, vehicles etc that belong to an enemy or opponent, so that they cannot be usedThere are fears that striking workers may try to sabotage the plant.
2to deliberately spoil someone’s plans because you do not want them to succeedHe’s trying to sabotage my career.
Why would anyone want to sabotage the deal?
—sabotage noun [uncountableU]The airline was investigating an apparent case of industrial sabotage after a jetliner in the final stages of production failed certain tests.