Think of the Forgotten Tongue as the Latin of their world. A dead language that is currently only known by a handful of scholars. Many words of modern languages are derived from it and there are several words/phrases from the original language that have lasted over the years. And yet if the average person heard it today they would be pretty much lost.
BTW I’m going out of town for the next few days. I WILL be making a post on Monday but it’ll be your typical Halloween filler all us webcomics are known to do.
See ya’ll when I get back on Tuesday.