Secret and concealed (11)
I believe the answer is:
clandestine
(Other definitions for clandestine that I've seen before include "Send a client (anag) - covert" , "Concealed" , "Done secretly" , "Surreptitious" , "through the backdoor" .)
I believe the answer is:
clandestine
(Other definitions for clandestine that I've seen before include "Send a client (anag) - covert" , "Concealed" , "Done secretly" , "Surreptitious" , "through the backdoor" .)