Literal:
* The insular region of the brain is responsible for processing sensory information.
* The insular part of the island was covered in dense rainforest.
Figurative:
* The old man lived a very insular life, rarely leaving his small apartment.
* The company's insular culture prevented them from adopting new ideas.
* The small town had an insular atmosphere, with everyone knowing everyone else's business.
Negative connotations:
* Her insular attitude made it difficult for her to connect with people from different backgrounds.
* The country's insular policies have created a climate of fear and suspicion.
Neutral connotations:
* The community was known for its insular nature, with strong ties between its members.
* The island's insular location allowed it to develop a unique culture.
Remember that "insular" can have both positive and negative connotations, depending on the context.