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Verb: undermine  ,ún-du(r)'mIn
  1. Destroy property or hinder normal operations
    "The Resistance undermined railway operations during the war";
    - sabotage, countermine, counteract, subvert, weaken
  2. Hollow out as if making a cave or opening
    "The river was undermining the banks";
    - cave

Derived forms: undermines, undermined, undermining

Type of: core out, disobey, hollow, hollow out

Encyclopedia: Undermine