Fuss about worship (5)
I believe the answer is:
adore
'worship' is the definition.
(thesaurus)
'fuss about' is the wordplay.
'fuss' becomes 'ado' ('ado' can be a synonym of 'fuss').
'about' becomes 're' (regarding).
'ado'+'re'='ADORE'
(Other definitions for adore that I've seen before include "Love to distraction" , "Love, revere intensely" , "Love greatly" , "Love, worship" , "Respect deeply" .)