Azure AI Content Safety supports custom blocklists -dictionaries of terms/phrases you define to detect obscure or domain-specific offensive terms in user content. Creating a blocklist is the minimal-effort, built- in way to meet this requirement; you don't need to build a classifier. References Create and use blocklists in Azure AI Content Safety. https://learn.microsoft.com/azure/ai-services/content-safety/concepts/blocklists Text moderation overview (using built-in classifiers with optional blocklists). https://learn.microsoft.com/azure/ai-services/content-safety/concepts/text-moderation