General terms:
* Censure
* Condemnation
* Reprimand
* Rebuke
* Criticism
* Denunciation
* Reproach
* Admonition
* Censure
* Disapproval (less formal, but still implies a negative judgment)
More specific terms:
* Sanction (formal punishment or disapproval)
* Excommunication (formal exclusion from a group, often religious)
* Suspension (temporary removal from a position or privilege)
* Dismissal (removal from a job)
* Expulsion (formal removal from a group or organization)
The best word to use will depend on the specific context.