attacked, weakened, or defeated by underhand or seemingly harmless actions or by imperceptible stages:Both the struggling students and the most gifted ones are receiving limited support from an undermined educational system.
weakened or made to collapse by removing underlying support, as by eroding or digging away the foundation:With the release of material from the undermined cliffs at these sites, we should have had far more sand to feed the beaches, not less.
deliberately weakened by an excavation or tunnel dug underneath, as by an enemy in war:When the town was besieged, its defenders abandoned the undermined walls and retired into the citadel.
the simple past tense and past participle of undermine.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use undermined in a sentence
Their alternative is to reward two politicians conspiring to groundlessly undermine faith in American democracy.Georgia’s recount revealed no fraud — and just how unfit Loeffler and Perdue really are | Editorial Board | November 20, 2020 | Washington Post
As he tottered to a waiting SUV, the former mayor was asked whether his stunts are undermining an election that, by all serious accounts, was fair and accurate.Rudy Giuliani’s post-election meltdown starts to become literal | Dan Zak, Josh Dawsey | November 20, 2020 | Washington Post
Under Prime Minister Narendra Modi, environmental protection laws have been severely undermined.
His face stiffened, as if the world should have known that any pain medication would undermine the central project of his time on earth.
Together, both directives in the order effectively rewrite the GAOA and undermine the authority of Congress.
The safety of American personnel at the American consulate in Libya was undermined by a “stand down order.”Congress Debunks Congress’s Nuttiest Benghazi Theories | Ben Jacobs | November 26, 2014 | THE DAILY BEAST
Ford, now with the Middle East Institute, says that in some ways the strikes have “undermined the moderates.”
There are any number of examples of nations at war not allowing themselves to be undermined by journalists.
Blood Sport is filled with big conclusions that are undermined by the known facts.
Many factors ultimately undermined the first old agrarian Jeffersonian dream.In the Future We'll All Be Renters: America's Disappearing Middle Class | Joel Kotkin | August 10, 2014 | THE DAILY BEAST
It was the abuse of hashish that, undoubtedly, undermined his constitution, formerly so robust and strong.Charles Baudelaire, His Life | Thophile Gautier
Meanwhile it was this foolish habit—nothing more—that undermined the inherent firmness of his nature.Mistress Wilding | Rafael Sabatini
Her resentment of that undermined all the fairness of her logic, and even triumphed over the sword of her suspense.Hilda | Sarah Jeanette Duncan
Such mock-modesty would at once have undermined her arguments.Mary Wollstonecraft | Elizabeth Robins Pennell
Thus, the sand will be undermined by the waves, and this will cause the block to fall into the sea.Ten Books on Architecture | Vitruvius