Go back wearing tie, composed (8)
I believe the answer is:
together
'composed' is the definition.
(thesaurus)
'go back wearing tie' is the wordplay.
'back' shows that the letters should be reversed in order.
'wearing' is an insertion indicator.
'tie' becomes 'tether' (I've seen this before**).
'go' in reverse letter order is 'og'.
'og' put within 'tether' is 'TOGETHER'.
(Other definitions for together that I've seen before include "In each other's company" , "Appearing as a couple" , "stable" , "In conjunction, combined" , "Married" .)