Abbott-Smith Manual Greek Lexicon
ἀ-μεταμέλητος (G278)
2 * ἀ-μεταμέλητος , -ον ( μεταμέλομαι ), not repented of , unregretted : Ro 11:29 , II Co 7:10 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G278 · Greek
ἀμεταμέλητος
ametameletos · am-et-am-el'-ay-tos
from 1 (as a negative particle) and a presumed derivative of 3338; irrevocable