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We can reset Word's preferences. Close Word. Then in Finder, hold down Option key on your keyboard, click on Go menu and select Library. This will take you to the library folder of your home folder. Open Preferences folder and trash the file 'com.microsoft.Word.plist'.
Then trash the Microsoft folder you see in there. Do not empty trash.
Open Word. Please let me know if that didn't work, so we can continue troubleshooting.