I found this question as top result at Google but found a better solution myself that I think would be useful for others. Unfortunately this question is archived and I can not post answers there. Question: [https://support.mozilla.org/en-US/questions/1292350 Where did my bookmarked keyword searches go?] Solution for the tech-savvy / developers: # Close Firefox # Go to your Firefox profile directory # Create a backup copy of places.sqlite # Open places.sqlite in an sqlite editor # Go to table "moz_keywords" and delete the line with the keyword you want to remove # Commit/Save and quit Background information: In my instance the place_id of the keyword had a matching entry in moz_places but not in moz_bookmarks. Changing a title of another entry in moz_places however does not change the title shown in Firefox but edits done in moz_bookmarks are shown. I can only assume that there must have been a change of usage in these tables at some point in time and the moz_places entries are no longer shown in the bookmarks manager but are still accessible via keywords.