English edit

Etymology edit

un- +‎ open

Adjective edit

unopen (not comparable)

  1. (rare) Not open; closed.
    • 1866, The Law Journal Reports, volume 34, page 399:
      The argument used on the part of the plaintiffs was, that this power contains a special clause prohibiting waste, and it is said, and justly, in the abstract, that opening an unopen mine is in itself waste []