Strong's G3338 — μεταμέλλομαι (verb)
metamellomai (met-am-el'-lom-ai) v.
1. to care afterwards, i.e. regret
[from G3326 and the middle voice of G3199]
KJV: repent (self) 
Root(s): G3326, G3199 
Hebrew root: μέλω
Occurrences: 6