pariah
Meaning: an outcast
Usage: Following the discovery of his plagiarism, Professor Hurley was made a pariah in all academic circles.
ostracism
Meaning: exclusion from a group
Usage: Beth risked ostracism after repeatedly excluding others from the club.
marginalize
Meaning: to push someone to the edge of a group or society
Usage: The unfair policy marginalized students who lacked reliable transportation.
stigmatize
Meaning: to mark someone or something with social disapproval
Usage: The campaign tried not to stigmatize students who asked for extra help.
alienate
Meaning: to make someone feel isolated or separated
Usage: The captain’s harsh comments alienated several members of the team.
estrange
Meaning: to cause someone to become distant or separated emotionally
Usage: Years of misunderstanding estranged the two former friends.