Go with (6)
There are a few possibilities for this:
accompany
'go with' is the definition.
(synonyms)
This is all the clue.
(Other definitions for attend that I've seen before include "Listen carefully" , "Watch" , "Wait upon or be present" , "minister" , "visit" .)
(Other definitions for belong that I've seen before include "'Be part of, fit in (6)'" , "accepted socially" , "Be attached" , "Be correctly assigned" , "to have a home" .)
'go with' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for accompany that I've seen before include "Escort" , "Go with as a companion" , "Travel along with" , "Unbelief" .)