Not opened; left closed or shut, remaining sealed.

Unpierced, unopened.

That has not been pierced or cut open; esp. (of a boil, ulcer, etc.) that has not had an incision made to drain pus, relieve swelling, etc…

With adverbs, as unlaid-down, unlaid-forth, unlaid-off, etc.

That does not open.

(un-, prefix1 affix 2. Cf. Danish utappet.)