unlisted

(-listid)

adjective

not listed; specif.,
  1. not constituting an entry in a list
  2. not publicly listed; privately assigned: an unlisted telephone number
  3. not listed among those admitted for the purpose of trading on the stock exchange: said of securities

See unlisted in American Heritage Dictionary 4

adjective
  1. Not appearing on a list, especially not listed in a telephone directory.
  2. Relating to or being stock or securities not listed on a stock exchange.

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