συσκοτάζω
From LSJ
κατὰ τὸ φιλόκαλον πειραθέντα κατανοῆσαι → see by working out the calculation
English (LSJ)
A make dark, τὰ ἄστρα LXX Ez.32.7; ἡμέραν εἰς νύκτα σ. ib.Am.5.8. II intr., grow quite dark, ὁ οὐρανὸς σ. νεφέλαις ib. 3 Ki.18.45, cf. Jl.3.15, al.:—but, 2 in early writers, always impers., ξυσκοτάζει (sc. ὁ θεός) it grows dark, Th.1.51, 7.73, cf. X.Cyr. 7.5.15, etc.; ἤδη συσκοτάζοντος (sc. τοῦ θεοῦ) when it was now getting dark, Lys.Fr.75.4, cf. Diocl.Fr.141; συσκοτάζοντος ἄρτι τοῦ θεοῦ Plb. 31.13.9.