verb🔗ShareTo dig underneath (something), to make a passage for destructive or military purposes; to sap."The secret passage undermined the foundation of the old house, making it unstable. "militarybuildinggeologywaractionChat with AIVocabulary GamePractice Reading
verb🔗ShareTo weaken or work against; to hinder, sabotage."The war efforts were undermined by the constant bickering between the allies."actionbusinesspoliticsgovernmentChat with AIVocabulary GamePractice Reading
verb🔗ShareTo erode the base or foundation of something, e.g. by the action of water."Heavy rainfall undermined the foundation of the old house, causing cracks to appear in the walls. "geologyenvironmentstructurebuildingChat with AIVocabulary GamePractice Reading
