con·ceal 
(kən-sēl)
(kən-sēl)tr.v. con·cealed, con·ceal·ing, con·ceals
To keep from being observed or discovered; hide. See Synonyms at hide1.
[Middle English concelen, from Old French conceler, from Latin concēlāre : com-, intensive pref.; see COM- + cēlāre, to hide; see kel-1 in the Appendix of Indo-European roots.]
con·ceala·ble adj.
con·cealment n.