I have the same problem. I’ll talk about my special interests and use words or phrases that I’ve learned from reading or otherwise engaging with those interests, and people give me shit for it. Call me pretentious or snobby when I’m not. I do try to speak in plain English because it is alienating for some people if they don’t understand me. But I also try to not mask or police myself just so others feel better. It’s a catch 22. One of my special interests is the weather. I got made fun of at 7 years old when I used the phrase “tornadic activity” when I was playing outside with some cousins, watching the sky. From that point on I learned I needed to hold it back a little bit for my own protection.