I'm on the side of not having cuss words in MG. This is less an editor/publisher thing than my preference though. I cuss a lot in real life. However, I don't cuss in front of people under 12. That includes my own kids. It's a personal choice. My teens were allowed to cuss to their hearts' were content once they hit 12 with the understanding that there are "acceptable & unacceptable venues" to do so. Therefore, in my books for readers under 12, I don't use real or fake cuss words. In my YA, which is for teens, I have yet to write a book without cussing.
If anything it bugs me MORE than it does my editor in MG though . . .
I angst on things like Hel (the Norse afterworld), the "cock crowed" (which is more appropriate phrasing when quoting a prophecy) because they raise euphemism issues. My editors (Little, Brown US & Atom/Hachette UK) were fine with these, however.
For actual expressions of cussing, co-author & I have used these:
in LOKI'S WOLVES:
Then Fen swore under his breath.
“You’re one crazy—”
The wind whipped his last word away.
In ODIN'S RAVENS:
The dead Viking snarled and bellowed curses, calling Fen a shaggy hair, a bread nose, a half troll, and a pot licker.
“Hrafnasveltir!” one of the old Vikings bellowed. [NOTE: Note this means raven-starver, i.e. coward]
As to the oft-mentioned "violence is okay" thing, I have to say that our US editor had issues with violence in one place in
both of the 1st 2 books.
". . . a bit dark to have the heroes amputate an arm, even though it's a monster."
". . . will this scene [a river of zombies, drowning, and fight] be too violent for readers?"
She had no issue with a kiss (on the cheek) or the way we handled cuss words OR the words that could be read as euphemisms. I think that "language isn't ok, but violence is" has become one of those topics we toss around a lot. In my experience & in chatting with other authors, there is no unified response on this from publishers.
RANDOM NOTES in re: THE THREAD:
Some authors cited in the examples are "above the law." JKR, by the point of those later books, could make her own rules.
Note that there are
potential consequences if you use cuss words--school & library market being the potentially big one, & in MG that's a critical market. If however those consequences aren't as important as the inclusion of those words, then it's immaterial