unacknowledged — widely recognized; generally accepted: an acknowledged authority on Chinese art.
shrouded — a cloth or sheet in which a corpse is wrapped for burial.
backdoor — You can use backdoor to describe an action or process if you disapprove of it because you think it has been done in a secret, indirect, or dishonest way.
backstairs — a secondary staircase in a house, esp one originally for the use of servants
under the table — of, relating to, or for use on a table: a table lamp.
secret — done, made, or conducted without the knowledge of others: secret negotiations.