Sometimes, some things are better meant to be private and shouldn't be shown when others watch.
How can I remove individual auto-fill suggestions so that they don't re-appear?
I don't wish to remove them all because some auto-fill suggestions are handy to have…
Here is a quick example using the Ask Question button here, at least two questions don't belong there:
Best Answer
Hover the mouse cursor over each one and press the specified key.
Most browsers: Del
Chrome: Shift + Del
Mac + Chrome: Fn + Shift + Del
In some browsers, this also works for removing history entries from the address bar.