Lexical Definition

‎ἀμεταμέλητος‎ ametamélētos (am-et-am-el'-ay-tos) irrevocable G:A
from ‎Α‎ (as a negative particle) and a presumed derivative of ‎μεταμέλλομαι‎

without repentance, not to be repented of.

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
ἀμεταμέλητον without regret 2Cor.7.10
ἀμεταμέλητα Irrevocable Rom.11.29

Abbott-Smith

* ἀ-μεταμέλητος, -ον (< μεταμέλομαι),
not repented of, unregretted: Ro 11:29, II Co 7:10.†

Abbott-Smith References

Book Refs
Romans 11:29
2 Corinthians 7:10

Liddell-Scott-Jones

ἀμεταμέλητος-μέλητος, ον,

not to be repented of or regretted, ἡδονή[Refs 5th c.BC+]; ἀμεταμέλητοςμέλητον ἐστί τί τινι one has nothing to repent of, [Refs 2nd c.BC+]

__2 having no opportunity of repentance, [Refs 6th c.AD+]
__II of persons, unrepentant, feeling no remorse, ἀ. ἀνίατος[Refs 4th c.BC+]. adverb -τως[Refs 4th c.AD+]