All knives require sharpening from time to time as there is no "never dulls" material for knife steel. Even the hard ceramic knives that can easily break dulls eventually.
probably
to sharpen (a knife or any blade) is "aiguiser" in French. To sharpen a pen is "tailler un crayon".
its a opinion that that a curved knife is EASIER to sharpen then a double edged knife because the word easy, easiest, or easier makes it a opinion. therefor its a opinion
with a knife or sicors
The knife was blunt so we had to sharpen it.
no
give it to a practitionist.
Hone.
A small pocket knife used to sharpen a Quill, used for writing!
due to inertia of direction
it would sharpen
Comes from: Whetstone used to sharpen Blades such as knifes