Use the adjective peninsular to describe a near-island that is connected to the mainland.

Every good noun needs an associated adjective, and you won't have any difficulty in discerning where this one comes from. A peninsula is a piece of land that juts out into the water, nearly an island. Something that's peninsular looks like a peninsula or is a geographical area with a lot of peninsulas. The coast of Maine, for example, is peninsular, lined with thin necks of land. The Latin root, pæninsula, literally means "almost an island."

Definitions of peninsular
  1. adjective
    of or forming or resembling a peninsula
    peninsular isolation”
Word Family

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