Strong's G279 — ἀμετανόητος (adjective)
ametanoetos (am-et-an-o'-ay-tos) adj.
1. unrepentant
[from G1 (as a negative particle) and a presumed derivative of G3340]
KJV: impenitent 
Root(s): G1, G3340 
Hebrew root: μετανοέω
Occurrences: 1