I have a major peeve - "initiative" - in Norwegian
It's written "initiativ" (identical to English, sans the -e) and is pronounced "inisiativ" or "initsiativ" depending how you want to treat the T, both those are accepted
I have yet to hear a single Norwegian pronounce it correctly, and I pronounce it correctly because I started to read how the word looked like, and trust my fucking eyes. Only years later did I realize that I did pronounce it correctly, while practically nobody else does. Me and maybe 12 other Norwegians seem bothered by this, everyone else are idiots
"inshinativ" is the most common, but over-complications are also typical, such as "ishniativ" or "inshinshativ" - i have NO idea where they get the "sh" from, and even less where some get a second "sh" from, but... I'm looking out for whoever pronounces it with 3 sh-es in a row, like "ishinshishativ" or something...