insularity

The state of being an island, or of being insular in situation or character; restriction within or as within an island; that which is characteristic of an island or of the inhabitants of an island; insularism.

The state or quality of being an island or consisting of islands; insulation.

Narrowness or illiberality of opinion; prejudice; exclusiveness.

The quality or property of being insular.

the state of being isolated or detached