Funny business, working with a relative (6-2)
I believe the answer is:
goings-on
'funny business' is the definition.
(I've seen this before)
'working with a relative' is the subsidiary indication.
'working' becomes 'going' ('go' can be a synonym of 'work').
'with' says to put letters next to each other.
'a relative' becomes 'son' (son is a kind of relative**).
'going'+'son'='goingson'
(Other definitions for goings-on that I've seen before include "Suspect events or behaviour" , "Activities, esp. dubious ones" , "Suspicious happenings" , "mischief" , "Hanky-panky" .)