D&D 5E (2014) How do outsiders understand Barovian writing and speech?

[FormerlyHemlock]

Technically, it's more like:

I'm assuming spoken Barovian. My argument is that written language prevents oral linguistic drift.

 

[The Grassy Gnoll]

Barovians speak normally with a slight Slavic accent, but when they count it gets a bit weird.

"Vot vos your cart?"
"The six of Swords"
"Six! Six of swords! Mah ha ha. Wan of Swords! Two! Tree Swords! Four swords! Five Swords! Six! Mah ha ha"
"...."
"These is a cart of great good fortune. You vill meet a stranger on ze road. Wan stranger! Mah ha ha!"
"Um..."
"End now your second cart! Two carts! Mah ha ha!"
"We're leaving"

 

[Ancalagon]

I don't know about their spoken language, but all Barovians write in...

The Cursive Strahd.

I have punsters at my table. About once every 1-2 year, once makes a pun so vile that I must deduce XP. You've crossed that line mister!