A significant irritant in Mozilla Firefox is the "keyword history box" which persists on dropping down previously entered words identical or similar to the one the user is entering, thus detracting the USER from what the USER IS DOING.
There may be people for whom this feature is useful, fine, but those of us who find it a greatly distracting nuisance should not be forced to put up with it!
Why the people at Mozilla Firefox seem to prefer tyrannical force rather than providing democratic and simple toggles to turn features on or off is a mystery to this writer, and that applies to the entire software programming industry.
The whole original idea of the Mozilla Firefox browser was to let the USER do what he wants!
Search options and full customizability are essential!
Our solution: We disabled the "remember history" function, but keywords kept appearing. We then held down the up and down arrow buttons while the cursor is focused on the search bar, then pressed and held down the delete button and that gets rid of the individual stored search keywords and phrases quickly.
See online
Clear recent searches from the Search bar and especially at the bottom there, the how-to material on "Clearing individual search items".
The serious user wants full and easy "toggled" personal customizability.
Why not create a separate "Beginners" Mozilla Firefox for the rest of the world?