- Annul
- Cancel
- Nullify
- Undermine
- To render invalid; to weaken or lessen the force of;
to destroy the authority of; to render of no force or effect; to
overthrow; as, to invalidate an agreement or argument.
- Debilitate
- destabilise
- Dilute
- Enervate
- Geld
- Reduce
- Sap
- Boast about having time to cause deliberate disruption
- Covertly ruin
- Deliberate damage
- Deliberate damage of machinery
- Deliberate destruction
- Destroy or obstruct something for political or military purposes
- Secretly damage (equipment)
- invert
- Sabotage (proceedings)
- Undermine
- Undermine loyalty of
- Undermine, sabotage
- To overturn from the foundation; to overthrow; to ruin
utterly.
- To pervert, as the mind, and turn it from the truth; to
corrupt; to confound.
- Deliberately damaged
- Undermine (efforts)
- Wantonly destroyed