What could be done for this case is to use the provided spell checking functionality of the different browsers.
Unfortunately, the Kendo Ui for Angular Editor component doesn't provide a spell checking functionality as a built-in feature.
I am unsure if such feature will be approved for future development, but feel free to log it in our public Feedback Portal:
Please let me know in case we can provide any further assistance about this or any other Kendo UI for Angular related topic. Thank you in advance.
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