concealed

concealed or hidden on any grounds for any motive; "a concealed weapon"; "a concealed compartment in his briefcase"

• buried, hidden — covered from view
• bushwhacking — lying in ambush
• dark — secret
• furtive, lurking, skulking, sneak(a), sneaky, stealthy, surreptitious — marked by quiet and caution and secrecy; taking pains to avoid being observed
• hidden, obscure — difficult to find
• hidden, secret — designed to elude detection
• incognito(p) — with your identity concealed
• lying in wait — waiting in concealment; in ambush
• lurking — concealed and unsuspected
• sealed — undisclosed for the time being
• secret — not open or public; kept private or not revealed
• sneaking(a), unavowed — not openly expressed