Schürfer
Schärfer is a German term with several related meanings. As an adjective, it is the comparative form of scharf and means “more sharp” or “sharper.” It is used to describe physical sharpness of blades as well as figurative sharpness, such as a sharper mind or a sharper argument. Examples include Die Klinge ist schärfer geworden and Das sind schärfere Fragen.
As a noun, Schärfer (capitalized) historically denotes a person who sharpens blades or tools—a knife sharpener.
Schärfer can also appear as a surname, as is the case with German family names derived from
Notes on usage: schärfer is the comparative form of scharf, used to compare degrees of sharpness. The