ἐπακριβόω
From LSJ
ἐπ' αὐτὸν ἥκεις τὸν βατῆρα τῆς θύρας → you've come to the crux of the matter, come to the point, hit the nail on the head, you've come to the very threshold of the door, you are come to the very threshold of the door, you've arrived at the truth of the matter
English (LSJ)
A develop in detail, Epicur.Ep.1p.27U.:—Med., D.S.37.8.
German (Pape)
[Seite 897] genau, sorgfältig thun, Epicur. bei D. L. 10, 75. S. das Vor.
Greek (Liddell-Scott)
ἐπακρῑβόω: πραγματεύομαι μετὰ προσοχῆς καὶ ἀκριβείας, ἐξακριβόω, Ἐπίκουρ. παρὰ Διογ. Λ. 10. 75, οὕτω καὶ ἐν τῷ Μέσ. τύπῳ, Διοδ. Ἀποσπ. 611. 75.
Russian (Dvoretsky)
ἐπακρῑβόω: прилагать старания, разбирать со всей тщательностью Epicur. ap. Diog. L.; med. Diod.