undermine
1 ENTRIES FOUND:
undermines;
undermined;
undermining
undermines;
undermined;
undermining
Britannica Dictionary definition of UNDERMINE
[+ object]
:
to make (someone or something) weaker or less effective usually in a secret or gradual way
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She tried to undermine my authority by complaining about me to my boss.
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The events of the past year have undermined people's confidence in the government.
