adjective: 1. Cloudy, misty, or foggy. 2. Vague or obscure.
From Latin nubilosus (cloudy), from nubes (cloud).
"Antonioni is probably best known for Blow-Up, a nubilous 1966 drama set in swinging London about a fashion photographer who comes to believe that a photograph he took of two lovers in a public park also shows, hidden in the background, evidence of a murder."
Rick Lyman; Michelangelo Antonioni, Subversive Filmmaker; International Herald Tribune (Paris, France); August 1, 2007.
"All of which nubilous musing serves little purpose, except to show that cloud-gazing, as a way of passing time, has appealed to all humanity since the earliest of times."
Andy Drought; We Really Don't Know Clouds At All; The Herald (Glasgow, UK); Oct 27, 2001.