ob-nūbĭlo, āvi, ātum, 1,
v. a., to cover with clouds or fog; to overcloud, darken, obscure (post-class.): vultūs serenitatem, Gell. 1, 2, 5: haec omnia vitium, to obscure , Amm. 28, 4, 2: odore sulfuris obnubilatus, beclouded, stupefied, senseless , Ap. Met. 9, 24, 15; so, animam, id. ib. 8, 8, 11.