1. the quality or state of being diffuse; tendency to spread out or scatter widely
Usage: often used to describe writing, speech, or thought that lacks focus or conciseness
2. the quality of being spread out or distributed over a wide area or range
Usage: used in physical or abstract contexts

Examples

• The diffusiveness of his writing made it hard to follow his main argument.
• Critics complained about the diffusiveness of the novel, which wandered between too many subplots.
• The diffusiveness of light through frosted glass creates a soft, even glow.
• Her tendency toward diffusiveness in conversation often frustrated her colleagues.
• The diffusiveness of the organization's goals led to confusion about priorities.
• He struggled to overcome the diffusiveness of his thoughts and express himself clearly.