Verses with the word undermine in the Apocrypha (2 verses):
Wisdom of Solomon 4:12
For the bewitching of naughtiness doth obscure things that are honest; and the wandering of concupiscence doth undermine the simple mind.
Sirach 12:17
If adversity come upon thee, thou shalt find him there first; and though he pretend to help thee, yet shall he undermine thee.