The newest auto-update to the Word 2016 I have on my Windows 10 computer has started popping up this little box in the upper left-hand corner of the screen whenever I'm going back through something I've written with the arrow keys or mouse. It seems to be giving me suggestions of possible variations on the word or punctuation that the cursor lands next to. It is really distracting when I'm trying to reread and edit something, and I'd like to turn it off, but I don't even know what this feature is called so I haven't been able to look up how to disable it (I tried looking up "suggestion" and a few similar terms but kept getting threads for the auto-complete function on mobile apps). I've attached a screen shot of what I'm talking about. Does anybody know what this is called and/or how I turn it off?

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