Abyssish
Have you ever noticed that you can add -ish to the end of any word and it immediately makes that thing less intense? Like, it’s not red, but redish… makes you feel better about an infection, right? Your not being stupid, but stupidish! Or, if you paint a dark painting that looks like a deep void that someone could fall deep inside, but it’s painted on a canvas that is less than a foot and a half across, is could be called “Abyss,” but “Abyssish” seems to be more appropriate. The perfect name!
Or maybe perfectish.