Treated like rubbish (6)
I believe the answer is:
dumped
'treated like rubbish' is the definition.
The definition and answer can be both to do with ownership as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for dumped that I've seen before include "Deselected" , "abandoned" , "Ditched" , "Deposited as rubbish, or got rid of" , "Left" .)