You may find more help here: Assign shortcuts to search engines. In about:config, toggle the following preference to false to disable searching from the address bar unless you click one of the search engine options.In Firefox settings>Search>Search Suggestions, uncheck Show search suggestions in address bar results and ahead of browsing history. You can enter your Google search easily with autocomplete. You can turn off or remove certain autocomplete predictions, or report issues with your predictions. I'm pretty sure there's a hidden pref you can toggle to disable searching from the address bar entirely if that's what you want. This article explains what information is stored in your Firefox history and gives you step-by-step ways to clear all or part of it. There is no direct option to remove search from Firefox's new tab page, but as always, there are hacks that you can make use of. How to Remove "Search With" from FireFox Address Bar (v58). When I type in the address bar the first autocomplete option is always "search with Google".