noun, plural kak·is·toc·ra·cies.

government by the worst persons; a form of government in which the worst persons are in power.

Origin of kakistocracy

1820–30; < Greek kákisto(s), superlative of kakós bad + -cracy
Related formska·kis·to·crat·i·cal [kuh-kis-tuh-krat-i-kuh l] /kəˌkɪs təˈkræt ɪ kəl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for kakistocracy

1829, "government by the worst element of a society," coined on analogy of its opposite, aristocracy, from Greek kakistos "worst," superlative of kakos "bad" (which perhaps is related to the general IE word for "defecate;" see caco-) + -cracy.

Online Etymology Dictionary, © 2010 Douglas Harper