Strong's #278: ametameletos (pronounced am-et-am-el'-ay-tos)

from 1 (as a negative particle) and a presumed derivative of 3338; irrevocable:--without repentance, not to be repented of.

Thayer's Greek Lexicon:

̓́

ametamelētos

1) not repentant of, unregretted

Part of Speech: adjective

Relation: from G1 (as a negative particle) and a presumed derivative of G3338

Citing in TDNT: 4:626, 589

Usage:

This word is used 2 times:

 

Romans 11:29: "and calling of God are without repentance."
2 Corinthians 7:10: "worketh repentance to salvation not to be repented of: but the sorrow"