Where does “not” come from?

not (Indonesian) comes from Dutch noot, from Middle Dutch nōte, from Old Dutch nutu, from Proto-West Germanic hnut, from Proto-Germanic hnuts, from Proto-Indo-European knew-, from Proto-Indo-European ken- — to arise, begin.

not (Indonesian): note, a character, variously formed, to indicate the length of a tone, and variously placed upon the staff to indicate its pitch