jargonaut

plural jargonauts

1. Someone who uses jargon, especially to an excessive degree.

   Only a generation ago, some academic jargonaut coined prioritize, meaning “give priority to” or “rank in order of importance,” and stiffs like me ran to the ramparts to denounce it as ugly, bureaucratic and unnecessary.

   2006 September 24, William Safire, “On Language: Pretexting”, in New York Times, retrieved 20 Nov 2012

   Synonyms: jargoneer, jargonist