How can I stop someone's name from showing up on my facebook friend search bar?

[Blue_Ocean]

I used to go on someone's facebook a lot before, but now I just don't want her name to show up in my search bar when i type the first letter of her name or her full name. It's annoying. I tried going into other people's profiles who have the same name many times but it doesn't work.

[abraXus]

as i said before, the only possible way would be to block them

[john]

It's a default setting, you don't do anything.