not accessible to view; "concealed (or hidden) damage"; "in stormy weather the stars are out of sight"

hidden on any grounds for any motive; "a concealed weapon"; "a concealed compartment in his briefcase"[ant: unconcealed ]

adjective

bare , clear , disclosed , exposed , obvious , open , plain , revealed , shown , told , uncovered

adjective

buried , cached , camouflaged , covered , covered up , covert , enshrouded , guarded , holed up , hushed up , hush-hush * , incog , incognito , inconspicuous , masked , obscure , obscured , on the q. t. , perdu , planted , privy , put in the hole , recondite , screened , secreted , shrouded , stashed , tucked away , ulterior , under wraps * , unseen , veiled , hidden , abstruse , blind , blindfold , clandestine , disguised , hid , latent , occult , perdue , secret