δύσθνητος
From LSJ
ἀρχὴν μὲν μὴ φῦναι ἐπιχθονίοισιν ἄριστον· φύντα δ' ὅμως ὤκιστα πύλας Ἀίδαο περῆσαι → First, it is best for mortals to not be born. If born, to pass through Hades' gates as soon as possible.
Spanish (DGE)
-ον
de agonía, agonizante στέρνων δ' ἄπο φύσημ' ἀνεὶς δύσθνητον E.Ph.1438 (cód., pero v. δύστλητος).