ἀντικατατείνω
From LSJ
εἰ μὲν θάνατόν τε φυγὼν καὶ γῆρας ἀπεχθόμενον ἔστι τοι τούτων λάχος → if you wish to escape death and hated old age you can have this lot
English (LSJ)
A make counter-extension, Hp.Fract. 14, Art.3. II metaph., ἂν ἀντικατατείναντες λέγωμεν αὐτῷ λόγον παρὰ λόγον if we speak setting speech directly in contrast with speech against him, Pl.R.348a, cf. Plu.2.669e.
German (Pape)
[Seite 253] dagegen anspannen, sich anstrengen, -τείναντες λέγωμεν, mit Nachdruck dagegen sprechen, Plat. Rep. I, 348 a; ohne λέγειν Plut. Symp. 4, 5, 2.