Thread:Support/MediaWiki:Mwsuggest-disable is too technical/reply (2)

Autocompletion is one of the ways it is called, even the HTML attribute to disable it is named "autocomplete". Anyway such distinctions will probably not be understood widely. Maybe "Disable search suggestions"? That is the language used by most browsers, and it is probably clear enough that it does not refer to your search history but to the site suggesting you articles as you type.