insensatamente
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)
Spanish > Greek
ἀφραδής, ἔκφρων, ἄσοφος, ἀλογιστί, ἀλογί, δύσφρων, ἄφρων, ἀβουλεί, ἀφρόντιστος, ἀγνώμων, ἀναίσθητος, ἄβουλος, ἀπόπληκτος