undermine

Reading level: hard

Estimated CEFR level: C1 — Advanced

Estimated from word frequency; not an official CEFR classification.

Definition

  1. verb destroy property or hinder normal operations
  2. verb hollow out as if making a cave or opening

Etymology

From under- + mine.

In classic literature

Synonyms

sabotage, countermine, counteract, subvert, weaken

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