The term "Goth" comes from the gothic tradition, which has its roots in old words that refer to Germanic or Teutonic peoples (that is, Visigoths). It also refers to a type of novel - gothic - that is usually a tome of horror set in a realm full of demons, or at the very least a scary mansion or some such. In architecture, it means pointed and arched windows, flying buttresses and small panes of glass that slightly distort whatever is on the other side.
However, when it comes to people, Goth used to mean being barbarous and outside of civilization. It meant someone who has forsaken the niceties of things like laws and not enslaving everyone they come across just for fun - someone who might raid a village or pillage a town.
While it has now lost the more extreme connotations, the term has maintained the sense of a person who walks outside the conventions of society. They don't care what so-called "normies" think and they're not interested in amassing meaningless consumerist markers of supposed "success" like being conventionally pretty, having a monogamous marriage, owning a home or putting money into a 401(k). They dwell on dark subjects that make the mainstream uncomfortable, like death and torture, and they read Edgar Allan Poe like he's going out of style. Most of all, they dress for the role of truth-telling, conformity-busting party-pooper, in all black. So tell us what your Goth costume involves and we'll help you select the most Goth name you can possibly imagine!