annubilo

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

an-nūbĭlo (better adn-), āre, v. a.,

to involve in clouds , to overcast : velis adnubilat aura secundis, Stat. S. 5, 1, 146.—Trop., to obscure : virtutem, Amm. 27, 6.