What's the noun for sharpest? Here's the word you're looking for.
sharp
(music) The symbol ♯, placed after the name of a note in the key signature or before a note on the staff to indicate that the note is to be played a semitone higher.
(music) A note that is played a semitone higher than usual; denoted by the name of the note that is followed by the symbol ♯.
(music) A note that is sharp in a particular key.
(music) The scale having a particular sharp note as its tonic.
(plural) Something that is sharp.
A sharp tool or weapon.
(medicine) A hypodermic syringe.
(medicine) A scalpel or other edged instrument used in surgery.
“In a twinkling, the accomplished sharper changes the pitchers and, pretending to examine the contents, asks the tapster what kind of wine he has given him.”