overcast (part. adj.) Copy link • overcast (part. adj.): nūbĭlus: if the sky should become o., si fiat coelum n., Plin. 16, 26, 46. The neut. is used subs.: e. g. when the sky is o., nubilo, id. 11, 24, 28: Suet. Impers. nubilat, the sky becomes o.: Varr. R. R. 1, 13 (si n. coeperit). Phr.: the sky was o., coelum nubibus obscuratum, Sall. Jug. 38: the clouds gather from all sides and the sky is o., nubes undique adductae obruere tenebris diem, Petr. 114: cf. eripiunt subito nubes coelumque diemque, Virg. Aen. 1, 88: more simply, coelum nubibus tegitur, obducitur (Kr.).