A specialized vocabulary or set of idioms used by a particular group: thieves' argot.
[French, from earlier argot, underworld of beggars and thieves, of unknown origin.]
Usage Note: The pronunciation of argot as (ärgət) was long considered acceptable and has historically been included in most dictionaries. However, it is falling out of favor; in our 2005 survey, 75 percent of the Usage Panel found that pronunciation unacceptable.
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.