undermines; undermined; undermining
: to make (someone or something) weaker or less effective usually in a secret or gradual way
She tried to undermine my authority by complaining about me to my boss.
The events of the past year have undermined people's confidence in the government.
Cite this Entry
“Undermine.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/undermine. Accessed 20 Jun. 2026.
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