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verb [transitive] undermine pronunciation in American English /ˌʌndərˈmaɪn/ 
Word Forms
present tense
present participleundermining
past tenseundermined
past participleundermined
  1. 1
    to make something or someone become gradually less effective, confident, or successful

    Britain was accused of undermining international efforts to reduce pollution.

    Their trading position has been seriously undermined by the minister's remarks.

    Synonyms and related words for this sense of undermine
    1. a.
      to deliberately say or do things that make someone appear less impressive or less important

      They had spoken secretly to reporters in an effort to undermine the leadership.

  2. 2
    to dig under something, especially so that it becomes weaker
    Synonyms and related words for this sense of undermine


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