βαρυκάρδιος
From LSJ
κακοὶ μάρτυρες ἀνθρώποισιν ὀφθαλμοὶ καὶ ὦτα βαρβάρους ψυχὰς ἐχόντων → eyes and ears are poor witnesses for men if their souls do not understand the language (Heraclitus Phil.: Fr. B 107; Testimonia: Fragment 16, line 6)
English (LSJ)
ον,
A heavy, slow of heart, LXXPs.4.2.
German (Pape)
[Seite 434] schweren, verstockten Herzens, LXX.; Nonn.
Greek (Liddell-Scott)
βᾰρῠκάρδιος: -ον, βαρύς, ἀναίσθητος τὴν καρδίαν, ὀκνηρός, Ἑβδ. (Ψαλμ. δ΄, 3), Ἐκκλ.