What is the synonym of Discredit?

Here are some synonyms for "discredit," depending on the specific context:

General synonyms:

* Damage

* Tarnish

* Undermine

* Impugn

* Cast doubt on

* Challenge

* Invalidate

* Debunk

* Expose

* Refute

* Contradict

More formal synonyms:

* Besmirch

* Defame

* Vilify

* Slander

* Calumniate

* Asperge

Informal synonyms:

* Trash

* Put down

* Smear

* Badmouth

The best synonym for "discredit" will depend on the specific situation and the desired level of formality.