Affair, matter (7)
I believe the answer is:
shebang
I believe this clue is a double definition.
'affair' is the first definition.
('shebang' can informally refer to a matter or situ)
'matter' is the second definition.
(shebang means any matter or situation)
(Other definitions for shebang that I've seen before include "circumstances" , "The whole ___ (entirely)" , "Lot" , "business" , "Matter" .)