7 Answers

Find the file, click once to highlight and press delete, it should be gone.

See here > http://www.ehow.com/how_6662229_permanently-saved-microsoft-word-files.html 

1.  Open the letter

2.   Right click.

3.  Select "delete"

I refer an excellent or effective : http://www.mannatsoftware.com/stellar-phoenix-word-repair.html

You can also try Kernel for Word repair tool. For more information visit here: http://en.wordrepair.org

If you deleted your word formatting or other data make use docx repair tool

http://www.docxrepairtoolbox.com works under Microsoft Windows 7 and below, till Windows 98

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