Dictionary entry

ἀχάριστος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

** ἀχάριστος, -ον

(< χαρίζομαι), [in LXX: Wi 16:29, Si 29:17, 25, IV Mac 9:10*;]

(a) ungracious, unpleasing;

(b) ungrateful, thankless: Lk 6:35, II Ti 3:2.†