social outcast; person with a shady past
Refers to someone who is shunned by society due to a stigma (e.g., ex-convict, mistress, illegitimate child) or who has something to hide. The term carries a strong negative connotation.
Because of his criminal record, he is treated as a social outcast in the village.
It's painful to live like a person with a shady past.
obscure person; forgotten person
Describes someone who lives in obscurity, away from public attention, or has been forgotten by the world. Less common than sense 1.
The once-famous person is now completely forgotten by the world.