How do I remove an address from auto-completion?

[Guest]

Much of the email I send is to addresses outside my company, but usually to
new people. After sending email to an external address, I might send another
email to that address again maybe once or twice, but that's it.

Most of the time when I type in three letters, I expect Outlook to match an
internal address. And most of the time that it matches an external address, I
don't care. But now it's matching someone other than my boss (an external
address that I will probably not ever use again). Most of my email gets cc'd
to my boss, so that means that almost every time I send email, I have to
select his name from a drop-down list. This is annoying.

I don't want to turn off auto-completion altogether, but I'd like to either
delete a particular address from the list of possible matches, or just stop
Outlook from using addresses not in either the Global Address List or my
Contacts list.

Is there a way to do either of these?

 

[Jack Handey]

To delete unwanted suggestions from the list, select the unwanted suggestion
by using the UP ARROW or DOWN ARROW keys, and then press DELETE.

 

[Guest]

This worked, thanks!

(I labeled this reply unhelpful because of my own mistake: I pressed the Del
button the number keys with numlock on. D'oh!)