Most often jargon is the vocabulary of a group one does not belong to. smile That reminds me of when I read that most people say that anyone driving slower than they are is an idiot, and anyone driving faster than they are is a maniac!

In my office we were aware that we were using jargon, and said so. I somewhat disagree about the word being a pejorative term. Certainly it would seem so to people who feel insulted by being excluded, but I think there are surely a lot of people who understand the need for jargon--at least at work--and may indeed be thankful they've not had to learn all that!

I will say that at a non-work social gathering it would be very rude for 2+ people who work together to speak their jargon at length in this setting.