Ending with church or party
I believe the answer is:
goer
'ending with church or party' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for goer that I've seen before include "one trying to succeed" , "Energetic type" , "Lively person -- feasible idea" , "Someone lively" , "Lively energetic person" .)