1. cloudy or hazy conditions; vague or unclear qualities
Usage: formal; often plural
2. nebulous regions or formations in space
Usage: astronomy; technical

Examples

• The nebulosities in his explanation made it difficult to understand his point.
• Astronomers study the nebulosities scattered throughout our galaxy.
• The morning fog created nebulosities that obscured the mountain peaks.
• Her writing was filled with nebulosities that confused readers.
• The telescope revealed distant nebulosities glowing with starlight.
• Legal documents should avoid nebulosities that lead to misinterpretation.