nūbĭlus, a, um, adj. nubes, cloudy, overcast, lowering (poet. and in post-Aug. prose). Lit.: caelum, Plin. 16, 26, 46, § 109: dies, id. 2, 35, 35, § 100: annus, Tib. 2, 5, 76.— Subst. nūbĭlum, i, n., a cloudy sky, cloudy weather: venti, qui nubilum inducunt, Plin. Ep. 2, 17, 7: differre aliquid propter nubilum, Suet. Ner. 13: vitandos soles atque ventos et nubila etiam ac siccitates. Quint. 11, 3, 27.—In abl.: nubilo, in cloudy weather, Plin. 7, 60, 60, § 215: aranei sereno texunt, nubilo texunt, id. 11, 24, 28, § 84.— In plur.: nū-bĭla, ōrum, n., the clouds: Diespiter lgni corusco nubila dividens, Hor. C. 1, 34, 5: caput inter nubila condit, Verg. A. 4, 177: nubila dissicere, Ov. M. 1, 328: nubila conducere, id. ib. 1, 572: nubila inducere et pellere, id. ib. 7, 202; Plin. Pan. 30, 3.— Transf. Cloud-bringing, cloudy: nubilus Auster, Ov. P. 2, 1, 26; Plin. 2, 47, 48, § 127; Claud. Laud. Stil. 1, 287.— Dark, gloomy: Styx, Ov. F. 3, 322: via nubila taxo, id. M. 4, 432: Tibris, id. ib. 14, 447: Arcas, dwelling in the infernal regions, Stat. Th. 4, 483.— Dark, of color: nubilus color margaritae, Plin. 9, 35, 54, § 108; Mart. 8, 51, 4.— Trop. Beclouded, troubled: ita nubilam mentem Animi habeo, Plaut. Cist. 2, 1, 5: Mars nubilus irā, Stat. Th. 3, 230.— Gloomy, sad, melancholy: toto nubila vultu, Ov. M. 5, 512: oculi hilaritate nitescunt et tristitiā quoddam nubilum ducunt, Quint. 4, 3, 27; cf. Plin. 2, 6, 4, § 13; Stat. S. 5, 3, 13: nubila tempora, Ov. Tr. 1, 1, 40; 1, 9, 6: nubila nascenti seu mihi Parca fuit, unfavorable, adverse, id. ib. 5, 3, 14.