ἀμεταμέλητος

ον, Adv.
A. not to be repented of or regretted, ἡδονή Pl. Ti. 59d; τὸ πεπραγμένον αὐτοῖς ἀ. γίγνεται Id. Lg. 866e; ἀμεταμέλητον ἐστί τί τινι one has nothing to repent of, Plb. 21.11.11.
2. having no opportunity of repentance, Just. Nov. 129.3.
II. of persons, unrepentant, feeling no remorse, ἀ. ἀνίατος Arist. EN 1150a22, 1166a29. Adv. ‐τως Them. Or. 19.231a, Inscr.Prien. 114.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project