Otherwise known as speaking in tongues
There are people who casually employ words that most of us have never heard, simply because they have a richly expansive vocabulary, and wish to express themselves with clarity and precision. When they discover that the listener has lost the thread of a conversation, they quickly repeat their points in much simpler terms. They do this, however, with such deft grace and social tact that the listener is left wondering if perhaps the speaker himself had not initially misspoken. The last thing a person of this character would ever want is to leave someone feeling intellectually inferior.
Then there are those who struggle to make use of the most obtuse language possible, even if they themselves aren’t entirely certain of what they just said, under the delusional misconception that being routinely incomprehensible raises their intellectual standing. For these people, the very goal of conversation is to make everyone else in the room feel intellectually inferior.
I am of the opinion that the first category of people make far better dinner companions.