Hello,
Automatic hyphenation is not supported as this time by RadRichTextBox. I logged a feature request in our Feedback Portal and you can vote for it in order to raise its priority as well as track its progress by using
this link.
Regards,
Peshito
Progress Telerik
Want to extend the target reach of your WPF applications, leveraging iOS, Android, and UWP?
Try UI for Xamarin, a suite of polished and feature-rich components for the Xamarin framework, which allow you to write beautiful native mobile apps using a single shared C# codebase.