jargonesque,a.rare—1.|-ˈɛsk| [f. jargon n.1 + -esque: cf.mod.F. jargonnesque (R. Estienne in Littré).] Characterized by the use of jargon, composed in jargon. 1884St. James's Gaz. 28 June 7/1 The plan of the book is to make a vocabulary of the jargonesque ballads [i.e. Villon's ballads in jargon].