I'm working on a community-world-build for a Sci-Fi universe and one of the things we're struggling with is how to develop profanity. It adds a... flavor to the writing, and in my own work-in-progress I feel not having profanity detracts from the work and might rip away a reader from being involved - I'd fully expect the characters to be swearing up a storm; the event they're going through is extremely emotional. The universe is set in our own, but year ~3400 with humanity spread to ~1/3rd of the Milky Way, and is a semi- Obviously, just creating a list of profanity will not do; there are too many cultures. We've got a word or two out of funny-misspellings as inside-jokes, but that's no way to create the entire repertoire and it wouldn't be realistic. Profanity comes from somewhere, but.... where? Brandon Sanderson, I feel, does a good job about this in his stories (i.e. "Storms" is used as profanity in a storm-wracked world, or "colors" in a culture where magic revolves around color). The people of the universe would have had colonization a few hundred years in their past, but "Confined spaces!" doesn't make for a good swear. Does anyone have any guidelines for creating profanity?