Strong's G2626 — κατακλύζω (verb)
katakluzo (kat-ak-lood'-zo) v.
1. to dash (wash) down
2. (by implication) to deluge
[from G2596 and the base of G2830]
KJV: overflow 
Root(s): G2596, G2830 
Hebrew root: κλύδων
Occurrences: 1