Synonyms of leper
outcastAn outcast is someone who is not accepted by a group of people or by society.
• He had always been an outcast, unwanted and alone.
pariahIf you describe someone as a pariah, you mean that other people dislike them so much that they refuse to associate with them.
• I was treated like a pariah for the rest of the journey.
Thesaurus for leper from the Collins English Thesaurus