undermined; undermining; undermines
Definition of undermine
1
: to subvert or weaken insidiously or secretly
trying to undermine his political rivals
2
: to weaken or ruin by degrees
3
: to wash away supporting material from under
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Great Words for Scrabble
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Merriam-Webster unabridged
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Time Traveler for undermine
The first known use of undermine was in the 14th century
See more words from the same century