I.full of darkness or gloom, shrouded in darkness, dark, gloomy (rare but class.): “esse sensus non obscuros sed tenebricosos,” Cic. Ac. 2, 23, 73: “popina,” id. Pis. 8, 18: “libidines,” id. Prov. Cons. 4, 8: “tenebricosissimum tempus,” id. Vatin. 5, 11: “iter,” Cat. 3, 11: “locus angustus et tenebricosus,” Varr. R. R. 3, 9, 19.
tĕnē^brĭcōsus , a, um, adj. tenebricus,