Question

undermine 【undermine】v.1.以危险手段伤害；暗中破坏 2，在…之下挖掘；逐渐损毁The President's enemies are spreading ill rumors to undermine his authority.总统的敌人在散布谣言来暗中破坏他的威信。The house is unsafe since the foundations were undermined by floods.自从房基被洪水损毁后，房子很不安全。

Accepted Answer

[ˌʌndər'maɪn] 
underminedestroy property or hinder normal operations
To undermine literally means to dig a hole underneath something, making it likely to collapse. But we more often use the word to describe sabotage or the act of weakening someone else's efforts.
Originally spelled with a ‘y’ instead of an ‘i’, undermine has Germanic roots and means to weaken, hinder, or impair. Accidentally undermine the foundation of a house by digging a tunnel to China beneath it and you might be forgiven. Undermine your teacher’s authority by speaking out of turn and throwing spitballs and odds are you’ll get in trouble.
All forms of 'undermine' will appear on average once every 731 pages.undermine

Front	undermine
Pron	[ˌʌndər'maɪn]
Back	【undermine】 v.1.以危险手段伤害；暗中破坏 2，在…之下挖掘；逐渐损毁 The President's enemies are spreading ill rumors to undermine his authority. 总统的敌人在散布谣言来暗中破坏他的威信。 The house is unsafe since the foundations were undermined by floods. 自从房基被洪水损毁后，房子很不安全。
Vocab	underminedestroy property or hinder normal operations To undermine literally means to dig a hole underneath something, making it likely to collapse. But we more often use the word to describe sabotage or the act of weakening someone else's efforts. Originally spelled with a ‘y’ instead of an ‘i’, undermine has Germanic roots and means to weaken, hinder, or impair. Accidentally undermine the foundation of a house by digging a tunnel to China beneath it and you might be forgiven. Undermine your teacher’s authority by speaking out of turn and throwing spitballs and odds are you’ll get in trouble. All forms of 'undermine' will appear on average once every 731 pages. undermine

Undermine House Means ˌʌndər'maɪn V.1.以危险手段伤害；暗中破坏 2，在…之下挖掘；逐渐损毁 President's Enemies