ἀντιπαιωνίζω
From LSJ
τί ἦ μοι ταῦτα περὶ δρῦν ἢ περὶ πέτρην → but what is this to me, about an oak or a rock | but what are these things about a tree or a rock to me | why all this about trees and rocks | why all this about what we have nothing to do with | but why am I off on this tangent
English (LSJ)
or ἀντιπαθ-ᾱνίζω,
A sing the battle song against, ἀλλήλοις Max. Tyr.32.2. cf. Aen.Tact.27.4 (-παιαν-).
Greek (Liddell-Scott)
ἀντιπαιωνίζω: ἀντιπαιανίζω, ἀντάδω παιᾶνα, ἀντιπαιωνίζοντα καὶ ἀντιτεταγμένα ἀλλήλοις στρατόπεδα Μάξ. Τύρ. 32. 6.