Dictionary entry

ἄστοργος

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

* ἄστοργος, -ον

(< στοργή, family affection, love of kindred, v.s. ἀγάπη),

without natural affection: Ro 1:31, II Ti 3:3 (MM, s.v.).†