undermine

verb

un·​der·​mine ˌən-dər-ˈmīn 

ˈən-dər-ˌmīn

undermined; undermining; undermines

transitive verb

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

4

: to excavate the earth beneath : form a mine under : sap

Choose the Right Synonym for undermine

weaken, enfeeble, debilitate, undermine, sap, disable mean to lose or cause to lose strength or vigor.

weaken may imply loss of physical strength, health, soundness, or stability or of quality, intensity, or effective power.

a disease that weakens the body's defenses

enfeeble implies a condition of marked weakness and helplessness.

enfeebled by starvation

debilitate suggests a less marked or more temporary impairment of strength or vitality.

the debilitating effects of surgery

undermine and sap suggest a weakening by something working surreptitiously and insidiously.

a poor diet undermines your health

drugs had sapped his ability to think

disable suggests bringing about impairment or limitation in a physical or mental ability.

disabled by an injury sustained at work

Examples of undermine in a Sentence

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.

Recent Examples on the Web

Newsom’s hard-line stance is undermining his signature Medicaid initiative, known as CalAIM, which dedicates $12 billion over five years in part to helping homeless people receive health care, housing, and social services. —Angela Hart, CNN, 11 Sep. 2024

Tapestry’s legal team drilled Smith with questions that sought to undermine his understanding of the consumer dynamic in the market, his use of consumer surveys to reach conclusions and more. —Evan Clark, WWD, 11 Sep. 2024

Republicans say that requiring proof of citizenship would ensure that U.S. elections are only for American citizens, improving confidence in the nation’s federal election system, something that former President Donald Trump has sought to undermine over the years. —Kevin Freking, Fortune, 9 Sep. 2024

Welch also disagreed with the Court of Appeals finding that foot-dragging by Kennedy in filing his appeals had not undermined his case. —Paul Egan, Detroit Free Press, 9 Sep. 2024

Word History

First Known Use

14th century, in the meaning defined at sense 4

Kids Definition

undermine

verb

un·​der·​mine ˌən-dər-ˈmīn 

1

: to dig out or wear away the earth beneath

undermine a wall

2

: to weaken or ruin secretly or gradually

undermine a government