Confederate getting some detail if family turned up (9)
I believe the answer is:
affiliate
'confederate' is the definition.
(thesaurus)
'some detail if family turned up' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'turned up' says the letters should be written in reverse.
'etailiffa' can be found hidden inside 'detail if family'.
'etailiffa' written backwards gives 'AFFILIATE'.
'getting' is the link.
(Other definitions for affiliate that I've seen before include "Become closely connected" , "Associate with a parent body" , "Attach (to an organisation)" .)