Not generally, with the only exception being the moments in which I launch myself in some highly speculative hypothesis. To be honest, it's kind of better that most of the time people don't understand me in these cases...
Nope, I'm usually too straightforward to be misunderstood. Failing that, I also try to communicate with people in a way that they can understand me.. that used to be a conscious process, but it's more and more subconscious.
Sometimes, Feelers might think that I'm slightly angry when I'm direct. But that's cleared up pretty quickly, especially if they already know me.
When I feel the least understood is when I get scatterbrained if I get excited or talk too fast, getting lost in my own train of thought. That's when I get looks of confusion. I know that's my cue to slow down so that I can help others understand me.
Well, I get described frequently as "just a bit off" by people, which could be either refering to my personality type or just me in general
This doesn't particularly bother me though, since I'm generally likable enough to forgive for the times when I say/do something incredibly stupid or ponder something that nobody cares about for a good while.
I think that EVERYONE feels misunderstood frequently enough, no matter what their type is, so it wouldn't be unique to just NTs
Human beings make life so interesting. Do you know that in a universe so full of wonders, they have managed to invent boredom? -Terry Pratchett