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Synonyms

undermine

American  
[uhn-der-mahyn, uhn-der-mahyn] / ˌʌn dərˈmaɪn, ˈʌn dərˌmaɪn /

verb (used with object)

undermined, undermining
  1. to injure or destroy by insidious activity or imperceptible stages, sometimes tending toward a sudden dramatic effect.

  2. to attack by indirect, secret, or underhand means; attempt to subvert by stealth.

  3. to make an excavation under; dig or tunnel beneath, as a military stronghold.

  4. to weaken or cause to collapse by removing underlying support, as by digging away or eroding the foundation.


undermine British  
/ ˌʌndəˈmaɪn /

verb

  1. (of the sea, wind, etc) to wear away the bottom or base of (land, cliffs, etc)

  2. to weaken gradually or insidiously

    their insults undermined her confidence

  3. to tunnel or dig beneath

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • underminer noun

Etymology

Origin of undermine

First recorded in 1300–50; Middle English underminen; under-, mine 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The game maker Roblox puts it like this in its annual report: “Failure to address AI ethics issues by us or others in our industry could undermine public confidence in our use of AI.”

From The Wall Street Journal

He survived waves of social change in Iran and multiple American administrations bent on undermining his rule.

From The Wall Street Journal

Saddam Hussein, Iraq's president, feared that Khomeini's Islamic revolution would spread abroad and undermine his own regime.

From BBC

“In a narrow set of cases, we believe AI can undermine, rather than defend, democratic values,” Amodei wrote Thursday.

From MarketWatch

The firm's chief executive Dario Amodei said on Thursday that his company would rather not work with the Pentagon than agree to uses of its tech that may "undermine, rather than defend, democratic values."

From BBC