etymology of "a" being used as a prefix to mean "not" [closed]

Question

Was merely curious about the origination of "a" being use as a prefix to mean "not", as in atypical or asymptomatic. I have only done a cursory search for an answer, but I figured it may be easier to ask a learned community rather than spend countless hours on my own

Answer 1

From Ancient Greek ἀ- from Proto-Indo-European n̥-, which is a zero-grade prefix form of ne, which meant "not".