Stigmatise is a related term of slander.

As nouns the difference between stigmatise and slander

is that stigmatise is stigmatic, person marked with christ's stigmata while slander is a false or unsupported, malicious statement (spoken or published), especially one which is injurious to a person's reputation; the making of such a statement.

As verbs the difference between stigmatise and slander

is that stigmatise is while slander is to utter a slanderous statement.

As an adjective stigmatise

is stigmatized, marked with stigmata.