CONCEALMENT
concealment, concealing, hiding
(noun) the activity of keeping something secret
screen, cover, covert, concealment
(noun) a covering that serves to conceal or shelter something; “a screen of trees afforded privacy”; “under cover of darkness”; “the brush provided a covert for game”; “the simplest concealment is to match perfectly the color of the background”
privacy, privateness, secrecy, concealment
(noun) the condition of being concealed or hidden
Source: WordNet® 3.1
Etymology
Noun
concealment (countable and uncountable, plural concealments)
The practice of keeping secrets.
The condition of being hidden or concealed.
(military) protection from observation or surveillance.
Source: Wiktionary
Con*ceal"ment, n. Etym: [OF. concelement.]
1. The act of concealing; the state of being concealed.
But let concealment, like a worm i' the bud, Feed on her damask
cheek. Shak.
Some dear cause Will in concealment wrap me up awhile. Shak.
2. A place of hiding; a secret place; a retreat frem observation.
The cleft tree Offers its kind concealment to a few. Thomson.
3. A secret; out of the way knowledge. [Obs.]
Well read in strange concealments. Shak.
4. (Law)
Definition: Suppression of such facts and circumstances as in justice ought
to be made known. Wharton.
Source: Webster’s Unabridged Dictionary 1913 Edition