Service is, nevertheless, no good (8)
I believe the answer is:
evensong
'service' is the definition.
(type of church service)
'nevertheless no good' is the wordplay.
'nevertheless' becomes 'even so' (synonyms).
'no good' becomes 'ng' (abbreviation).
'evenso'+'ng'='EVENSONG'
'is' acts as a link.
(Other definitions for evensong that I've seen before include "Late afternoon church service" , "... Prayers" , "Service of evening prayer in Church of England" , "Vespers" , "Religious service" .)