Nah, if you don't know how to write it, just write it with an S. It doesn't matter if the later part of the word is correct or not, once you replace the C with an S it becomes a reference, and any misspelling would seem intended.
In my case, I really just wanted the word to miss a letter for aesthetic reasons, and if possible, one should always remove a letter that is not required so the clarity is not obstructed (unless you want to obstruct clarity, see laughterhouse)
(And that's not lava, that's just a crack in the earth with a red light shining through. I originally used purple, so there would not be a liquid to associate with it and a bit more mysterious, but I was told it needs to be red to be evil...)
