* Relating to or characteristic of an island: This is the most common usage. For example, "The island's unsular culture was very different from the mainland."
* Narrow-minded or isolated: This meaning emphasizes a lack of understanding or tolerance for other perspectives. For example, "The politician's insular views were out of touch with the needs of the people."
If "unsular" is used in a specific context, please provide more information so I can help determine its meaning.