Meaning of “stigma” - Learner’s Dictionary

stigma

noun uk us /ˈstɪɡmə/
DISAPPROVAL [ C, U ]

If there is a stigma attached to something, people disapprove of it, especially when this is unfair:

There is still a stigma attached to being mentally ill.
stigmatize (also UK -ise) verb [ T ]

to treat someone or something unfairly by disapproving of them:

[ often passive ] Unmarried mothers are stigmatized by society.

(Definition of “stigma” from the Cambridge Learner’s Dictionary © Cambridge University Press)