gy·nar·chy (g??när?k?, j?n?är?-)n. pl. gy·nar·chies Government by women.gy·nar?chic adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.gynarchy (?d?a??n??k?; ??a?-) n, pl -chies (Government, Politics & Diplomacy) another word for gynaecocracyCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014gynarchya form of government by a woman or women. Also called gynecocracy. ? gynarchic, adj.See also: Women-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.Gynarchy government by women, 1577.Dictionary of Collective Nouns and Group Terms. Copyright 2008 The Gale Group, Inc. All rights reserved.