I've been lucky that many of the people around me were happy to learn. I haven't worked a white collar job yet so my work has been unrelated to the vocabulary. And people aren't insecure or defensive about education because they aren't payed to be educated. It was actually fun to teach the ones that wanted to learn. But I would also see lots of confused looks and so I lowered my vocab.

But I mean less terms like a-priori and more like flabbergasted or circumnavigate, pincer, dilapidated. Just higher reading level words that you might use in a description or as an adjective. nothing too jargony.