undermine
/ˌʌndəˈmaɪn/verb
with obj.
1- erode the base or foundation of (a rock formation)侵蚀（岩层）底基。
1.1
- dig or excavate beneath (a building or fortification) so as to make it collapse破坏（建筑, 要塞）底基。
1.2
- figurative 〈喻〉damage or weaken (someone or something), especially gradually or insidiously暗中破坏; 逐渐削弱：
this could undermine years of hard work.
这会破坏多年的辛勤劳动。
派生词
underminer
noun词源