ob-nūbĭlus, a, um,
adj., overclouded, cloudy, dark, obscure : obnubila tenebris loca, Enn. ap. Cic. Tusc. 1, 21, 48 (Trag. v. 108 Vahl.).
ob-nūbilus adj., clouded over: tenebris loca, Enn. ap. C. ...
An Elementary Latin Dictionary