1. The specialized language of a trade, profession, or similar group, especially when viewed as difficult to understand by outsiders: a crime novel that uses a lot of police jargon.
2. Nonsensical or incoherent language: "Your description will be considered as mere jargon by every man of sense" (Alexander Hamilton).
3. A hybrid language or dialect; a pidgin. Not in technical use.
intr.v. jar·goned, jar·gon·ing, jar·gons
To speak in or use jargon.
[Middle English jargoun, from Old French jargon, probably of imitative origin.]
jargon·ist, jar′gon·eer n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.