insular

Of or being, pertaining to, situated on, or resembling an island or islands.

Near-synonym: islandic

At the time of the arrival of the Tonquin he had about forty schooners, of from twenty to thirty tons burthen, and one old American ship. With these he held undisputed sway over his insular domains, and carried on intercourse with the chiefs or governors whom he had placed in command of the several islands.

Separate or isolated from the surroundings; having little regard for others opinions or prejudices; provincial.

Near-synonym: peninsular

During the four years since his puppyhood he had lived the life of a sated aristocrat; he had a fine pride in himself, was even a trifle egotistical, as country gentlemen sometimes become because of their insular situation.

Having an inward-looking, standoffish, or withdrawn manner.

Harriet was fretful and insular. Miss Abbott was pleasant, and insisted on praising everything: her only regret was that she had no pretty clothes with her.

Relating to the insula in the brain.

Relating to insulin.

An islander.

these insulars in general live in a gross saline air , and their vessels being less elastic are consequently less able to subdue and cast off what their bodies as sponges draw in