1) Bosom 2) Burying 3) Confidentiality 4) Cover 5) Coverture 6) Hiding 7) Latency 8) Masking 9) Privateness 10) Shoji 11) Stealth 1) Cover-up 2) Disguise 3) French word used in English 4) Hiding 5) Isolation 6) Mystification 7) Occultation 8) Privacy 9) Privateness 10) Secrecy 11) Smokescreen 12) The act of concealing 13) The state of being concealed 
• (n.) A place of hiding; a secret place; a retreat frem observation. • (n.) The act of concealing; the state of being concealed. • (n.) A secret; out of the way knowledge. • (n.) Suppression of such facts and circumstances as in justice ought to be made known.
An act of intentionally trying to hide some known facts to someone which is of great importance for him/her.These include trying to sell adisputed property, sell goods of inferior quality etc.
Con·ceal'ment noun [ Old French 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. ...
The unlawful suppression of any fact or circumstance by one of the partys to a contract from the other, which in justice ought to be made known.
Failure to reveal information that one knows should be disclosed in good faith. Such concealment can be a cause for rescission (cancellation) of a contract by the misled party or a civil lawsuit for fraud.
[n] - the activity of keeping something secret
concealment 1. The action of keeping something secret. 2. A covering that serves to conceal or to shelter something. 3. A condition of being concealed or hidden. 4. Keeping out of sight and from being seen, found, observed, or discovered.
concealing noun the activity of keeping something secret
the act of concealing. · the state of being concealed. · a means or place of hiding.
the condition of being hidden