undermine

Definition

To dig underneath (something), to make a passage for destructive or military purposes; to sap.

Etymology

From under- + mine.

Example Sentences

• "Martin, for instance, had on one occasion undermined a tree sacred to old gods, then stood in the path of its fall, but forced it to fall elsewhere by making the sign of the Cross."
• "The war efforts were undermined by the constant bickering between the allies."
• "The penile mishaps (one involving a bristled toothbrush), severings (one involves hungry ducks) and surgeries cited by Ms. Roach are nothing if not memorable, but her book consistently undermines its own discoveries."