Outlook - Remove EM Address Suggestions

There's an error in one of the EM address suggestions that appear when I type a letter in the To: field. I consistently inadvertently mail to that incorrect address. How do I remove that EM address? Here's how:

Here’s how to delete individual suggested entries:

1- In the To line, type the first letter or first few letters of the entry you'd like to delete.
3- Use the down arrow on your keyboard to select the entry you'd like to delete.
4- Press the Delete key on your keyboard.

...gone!