undermine
//ˌʌndərˈmaɪn//
Verb
undermineInfinitive
underminePresent tense
underminedPast tense
underminedPast participle
underminingPresent participle
underminesThird-person singular
1
To weaken or damage something gradually, especially someone's confidence, authority, or position.
The scandal undermined the politician's credibility.
2
To dig or excavate beneath something, especially to make it collapse or become unstable.
The river had undermined the bridge's foundation.