[pilaf]

Why into Word specifically?

[iAMkenough]

The average office worker has it on their computer, illustrating how commonplace unredacting could be. Any text tool will work, even some designed to detect bad redactions in PDFs via drag and drop (now specifically trained on these known bad redactions). https://github.com/freelawproject/x-ray

[arendtio]

You have a better editor?

[adtac]

ed is the standard Unix text editor.

[lagniappe]

ed is a line editor

[Melonai]

vi is also an editor, but sadly not the standard one, and since standard is king: ed it is.