nebulous , sa . ( Of the lat. )( nebulosus ). 1. adj. That it is abundant in mists, or covered with them. 2. Oscurecido adj. by clouds. 3. adj. somber, gloomy. 4. adj. Falto of lucidity and clarity. 5. adj. hard to understand. 6. adj. Arg. , Cuba y Ur. I vague, uncertain, unclear. Is a project both nebulum OS 7. f. Astr. Light blue, bright, cosmic matter composed of dust and gas, which offers various forms, generally vague outline. 8. f. Arg. , Cuba y Ur. State of confusion, uncertainty and vagueness. Is in a Nebula Did me a Nebula be someone in the nebulous s. 1. loc. verb. Ven. be in the clouds.