συνθνῄσκω
From LSJ
ὅτι τίς ὁ ἄνθρωπος, ὃς ἐπελεύσεται ὀπίσω τῆς βουλῆς τὰ ὅσα ἐποίησεν αὐτήν; (Ecclesiastes 2:12, LXX version) → for who is the man who, after following his own plan, will find wisdom (in) everything he has done?
English (LSJ)
fut.
A -θᾰνοῦμαι A.Ag.1139, Ch.979:—die with or together, A. ll.cc., S.Tr.720, etc.: c. dat., θανόντι συνθανεῖν ib.798, Fr.953. 2 of things, συνθνῄσκουσα δὲ σποδός expiring with (the flames), A.Ag. 819; οὐ γὰρ ηὑσέβεια (cj. for ἡ γὰρ εὐσέβεια) σ. βροτοῖς S.Ph.1443; ἡ ποίησις οὐχὶ συντέθνηκέ μοι Ar.Ra.868; cf. συναποθνῄσκω.