δύσθνητος
From LSJ
οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass
Spanish (DGE)
-ον
de agonía, agonizante στέρνων δ' ἄπο φύσημ' ἀνεὶς δύσθνητον E.Ph.1438 (cód., pero v. δύστλητος).
Russian (Dvoretsky)
δύσθνητος: смертный: φύσημα δύσθνητον Eur. хрипение умирающего.