1. To incriminate or to denounce openly or officially; to discredit as disgraceful: The boys' conduct was stigmatized as totally mean, low, and detestable, and so the principal of the school suspended them for a week.
2. To label someone, or something, as socially unacceptable: Cindy was stigmatized by the people in the little village because she divorced her husband.

Relating to someone who has been treated unfairly: The stigmatized student was not treated properly by his fellow class mates because of his race.