undermined
Americanadjective
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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.
verb
Etymology
Origin of undermined
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.
At first I thought the exchange undermined my story, making Hildebrand seem less central to the president’s energy policies than I’d suspected.
From Salon • Jun. 24, 2026
But even they could be in some jeopardy if the underlying inflation statistics are undermined.
From MarketWatch • Jun. 17, 2026
“There is a tendency for one to feel disillusioned and even undermined by the other,” astrologer Raymond Merriman said of their birth charts.
From The Wall Street Journal • Jun. 13, 2026
She added that while her daughter's primary school has been supportive, her confidence can be undermined by mistakes or uncertainty in other settings.
From BBC • Jun. 1, 2026
When McCandless came into his world, however, the boy undermined the old man’s meticulously constructed defenses.
From "Into the Wild" by Jon Krakauer
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.