Thread:Grimmaniac/@comment-33188476-20160310000503/@comment-33188476-20160413025207

It's from here - https://en.wiktionary.org/wiki/periculosum

Well, periculoso also means similar things to what Rosalee said, so they're probably from the same word. I asked the writers which word it is so maybe we can get it confirmed one way or the other based on what is in the script.