Strong's G2679 — κατασκάπτω (verb)
kataskapto (kat-as-kap'-to) v.
1. to undermine
2. (by implication) destroy
[from G2596 and G4626]
KJV: dig down, ruin 
Root(s): G2596, G4626 
Hebrew root: σκάπτω
Occurrences: 2