Friend1 : Did you hear Marcus tryin to use all those big words when he talks now? He never used to talk like that. It might not be so bad if he knew how to use them correctly.
Friend2: Yeah, that started when he got out of prison/jail. I call it his incarcerationvocabulation!
Speaking with un-neccessarily large or obsure words. It is often, but not always, done as a means to confuse the listener or to conflate the speakers ego
1. Having an impressively thorough vocabulary or knowledge of a language, but feeling the need to illustrate that to all persons with which one comes into contact.
2. Showing sesquipedalianism.
Person 1: "How was your date last night?"
Person 2: "Good, though he was a bit vocabularious."
Person 1: "I find gregarious pedantism unnecessary in the utilization of Socartic didacticism."
Person 2: "I find your vocabularious way of speaking irritating."