undermine
US /ˌʌn.dɚˈmaɪn/
UK /ˌʌn.dɚˈmaɪn/

1.
merusak, melemahkan
to make something, especially someone's confidence or authority, gradually weaker or less effective
:
•
The constant criticism began to undermine her confidence.
Kritik yang terus-menerus mulai merusak kepercayaannya.
•
His rivals tried to undermine his authority.
Saingannya mencoba merusak wewenangnya.
2.
menggali di bawah, merusak fondasi
to excavate beneath the base of a wall or building so as to make it collapse
:
•
The engineers had to undermine the old bridge supports to replace them.
Para insinyur harus menggali di bawah penyangga jembatan lama untuk menggantinya.
•
The heavy rains began to undermine the foundations of the house.
Hujan deras mulai merusak fondasi rumah.