Intended or serving to subvert, especially intended to overthrow or undermine an established government: "Sex and creativity are often seen by dictators as subversive activities” ( Erica Jong).
One who advocates or is regarded as advocating subversion.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.