συμμάρτυρ
From LSJ
ὥστε ὁ βίος, ὢν καὶ νῦν χαλεπός, εἰς τὸν χρόνον ἐκεῖνον ἀβίωτος γίγνοιτ' ἂν τὸ παράπαν → and so life, which is hard enough now, would then become absolutely unendurable
German (Pape)
[Seite 980] υρος, ὁ, ἡ, Mitzeuge; ξυμμάρτυρας ὔμμ' ἐπικτῶμαι, Soph. Ant. 839, ich nehme euch zu Zeugen; Plat. Phil. 12 b.
