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noun, a person prone to the excessive employ, in normal conversation, of any type of jargon (be it medical or corporate).
Jargoneer: "Let's ideate around this, and get some high-level action items down"
jargoneer by Stratwich May 15, 2009
1 a person who uses jargon in every-day conversation.

2 a person adept in the navigation of heavily jargon filled literature.
A jargonaut might say: she/he is the NCO @ the HPY in charge of DCH and MBS processing on a RTS basis in accordance with DCHMBSP.
jargonaut by Divado January 14, 2008

Cross-jargonation

Often times, specialized fields of study or knowledge will have field-specific definitions for various words. This is known as jargon. When two people representing different fields of knowledge come to conflict over an idea due to their respective jargons, cross-jargonation occurs. Generally one or both parties will refuse to compromise on the definition, preferring instead to act as if their definition is superior and unalterable. The result can often be heard as a loud popping sound, caused by the skull of an innocent kitten spontaneously detonating.
Gary was presented a query by his philosophy professor, whom we shall call Ace; Can a person be both a skeptic and an agnostic? Gary answered yes, and was quickly rebuffed by Ace, who stated that the two things were necessarily in conflict. Detecting a case of cross-jargonation, Gary suggested that Ace perhaps consider a more universal definition of the two terms. Ace refused, and all generally agreed that he is a total fucktard. The detonating kitten skull was heard shortly after.

Jargonese 

The language certain academics speak purposely to mask their failure to make the complex understandable, usually a sign of either profound insecurity or a failure to understand the complex thoughts they are discussing.
"Her jargonese is exhausting everyone," sighed one person at the conference on Victorian Marxism Hegemonies.
Jargonese by Dame Teacher February 20, 2022
One who seeks to invent new jargon.
"Penn is a Jargonaut as he made a word up just so he could get in the dictionary.
Jargonaut by Teller July 8, 2003

Jargonator 

A human machine that produces pretentious vocabulary, convoluted phrasing and vague meanings for the purpose of appearing more intelligent. They favor terms that are unfamiliar to most people and do not use them in the correct context.
When Jonathan speaks, I don’t understand a word he says. He’s such a Jargonator!
Jargonator by hobrarian January 12, 2009