sabotage
US /ˈsæbəˌtɑʒ/
・UK /'sæbətɑ:ʒ/
B2
v.t.Transitive VerbTo destroy or damage, often secretly, to weaken
The spies wanted to sabotage the sensitive equipment
n. (c./u.)Noun (Countable/Uncountable)Destroying or damaging so as to weaken enemy, etc.
I believe that Andy is trying to sabotage my plans