Scottish family needs it made secret (11)
I believe the answer is:
clandestine
'secret' is the definition.
(I know that secret can be written as clandestine)
'scottish family needs it made' is the wordplay.
'scottish family' becomes 'clan' (I've seen this in another clue).
'made' indicates an anagram.
'needs'+'it'='needsit'
'needsit' with letters rearranged gives 'destine'.
'clan'+'destine'='CLANDESTINE'
(Other definitions for clandestine that I've seen before include "Done secretively" , "backroom" , "Undercover" , "through the backdoor" , "Concealed" .)