How do you stop history or auto-complete of email address?

By accident, I typed my password next to my email address, and now every time I type the first letter of my email address, a box drops down that shows this email with password attached.  I have tried erasing browsing history and deleting form data and passwords. The only thing I have not done is delete autocomplete of internet addresses, because it also affects many other things.  What is the way to accomplish this on Outlook sign-in page?