A party making fuss (3)
I believe the answer is:
ado
'fuss' is the definition.
(synonyms)
'a party' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'a'+'do'='ADO'
'making' is the link.
(Other definitions for ado that I've seen before include "Nothing caused much around 1598" , "Flap" , "Rapid bustling commotion" , "carry-on" , "Shakespeare: 'Much ... About Nothing'(3) ()" .)