Undermine definition

Undermine

Topics Undermine Definition

WordNet

(1) Hollow out as if making a cave or opening

"The river was caving the banks"

(2) Destroy property or hinder normal operations

"The Resistance sabotaged railroad operations during the war"

WiktionaryText

hinder, sabotage

The war efforts were undermined by the constant bickering between the allies.
To dig, tunnel, hollow out as if making a cave or opening.