How to remove misspelled words from the Windows 8 spell-check dictionary

Every once in a while you accidentally add a word to the spell-check dictionary you didn't mean to, or maybe later you found out that it wasn't spelled the way you thought. But how do you fix your mistake?

Turns out it's quite easy to do.
Here's how:

Microsoft Windows 8

The file you want is:
"C:\Users\<account>\AppData\Roaming\Microsoft\Spelling\<language>\default.dic"

1. Open File Explorer
2. In the address bar, type "C:\Users" and hit enter.
3. You will see a few folders listed. Open the one for your account, often your first name.
4. Now click in the empty space of the address bar and append "\AppData\Roaming\Microsoft\Spelling" and hit enter.
5. You should see at least one folder in here reflecting the language you are using. For U.S. English, this is "en-US". Open that folder.
6. Open the file "default.dic". It should open in Notepad.
7. The file is very simple, containing one line for every word. Simply delete the offending lines, leaving no blank, and save the file.

Microsoft Office

The file you want is:
"C:\Users\<account>\AppData\Roaming\Microsoft\Office\<version>\<random>\Proofing\RoamingCustom.dic"

1. Open File Explorer
2. In the address bar, type "C:\Users" and hit enter.
3. You will see a few folders listed. Open the one for your account, often your first name.
4. Now click in the empty space of the address bar and append "\AppData\Roaming\Microsoft\Office" and hit enter.
5. There should be a folder named something like "15.0", which reflects the version of Office installed. Open that folder.
6. Now there will be a folder that appears to have some random name. Open that folder.
7. Now you should see a "Proofing" folder. Open that folder.
8. Open the file "RoamingCustom.dic". It should open in Notepad.
9. The file is very simple, containing one line for every word. Simply delete the offending lines, leaving no blank, and save the file.

Update: Turns out there's a much easier way to do it for Office. Open up Word and go to Options. Under the "Proofing" section, there is a button for "Custom Dictionaries..." Select the dictionary and on the right click "Edit Word List..."