undermine

About 4.32 uses per million words.

Meaning

1. verb To dig underneath (something), to make a passage for destructive or military purposes; to sap. .mw-parser-output .defdate{font-size:smaller}
2. verb To weaken or work against; to hinder, sabotage.

   The war efforts were undermined by the constant bickering between the allies.

3. verb To erode the base or foundation of something, e.g. by the action of water.
4. verb To regard an object as the sum of the parts that compose it, in object-oriented ontology.

Similar words

sabotage subvert counteract weaken countermine cave overthrow subtract thwart obstruct

Often followed by

the their his its it and our a this any

Word family

undermined undermines undermining