simple past tense and past participle of orphan
"After the car accident, both of my parents were killed and I was left completely orphaned at just six years old."
deprived of parents by death or desertion
"After his father left and his mother passed away, the boy was officially orphaned at a young age."
Abandoned.
"The stray dog wandered through the empty streets, looking for a home after being abandoned by its previous owner."