- destabilise - Destroy by degrees - Sabotage below pit - Weaken - To excavate the earth beneath, or the part of,
especially for the purpose of causing to fall or be overthrown; to form
a mine under; to sap; as, to undermine a wall. - Fig.: To remove the foundation or support of by
clandestine means; to ruin in an underhand way; as, to undermine
reputation; to undermine the constitution of the state.