Hello Brigitte Dempsey
Thank you for posting question to Microsoft Q&A Forum.
Update November 16, 2025.
Based on Bob's finding, updating to 16.103.1 (Current Channel Preview) should remove this Copilot symbol.
My apology for inconveniences caused by this issue, please look at this article for instruction to turn off Copilot.
https://support.microsoft.com/en-us/office/turn-off-copilot-in-microsoft-365-apps-bc7e530b-152d-4123-8e78-edc06f8b85f1
In Word, please click on Word > Preferences > Privacy > uncheck the box "Turn on optional connected experiences".
Please try this and let me know if you have any further updates.
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