Via https://dict.leo.org/forum/viewUnsolvedquery.php?idThread=49... and https://dict.leo.org/forum/viewUnsolvedquery.php?idThread=16...
Meanwhile I won't be able to remember that German word longer than it takes me to close this tab. Vershumthingsomething.
That's not what "worseprovement" conveys to me, you can worseprove a single part, intending to make it better, making that same thing actually worse by the very same change.