Near end of road, having ceased trading (6)
I believe the answer is:
closed
'ceased trading' is the definition.
The definition and answer can be both to do with fundamental existence as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?
'near end of road' is the wordplay.
'near' becomes 'close' (synonyms).
'end of' suggests the final letters.
The final letter of 'road' is 'd'.
'close'+'d'='CLOSED'
'having' is the link.
Can you help me to learn more?
(Other definitions for closed that I've seen before include "Concluded or fastened" , "Resolved" , "Terminated" , "See 1" , "successfully completed" .)