παρεμβαίνω
From LSJ
εἰς δὲ θεοὺς ἀσεβείας τε καὶ εὐσεβείας καὶ γονέας καὶ αὐτόχειρος φόνου μείζους ἔτι τοὺς μισθοὺς διηγεῖτο → and he had still greater requitals to tell of piety and impiety towards the gods and parents and of self-slaughter
English (LSJ)
A fit in, εἰς ἐπιτομήν Ph.Bel.66.39 ; go in beside another, Plu.2.593f ; τεθρίππῳ π. to be mounted beside another on... D.H.2.34 ; ἐφ' ἁρματίου Id.5.47, etc.