Educated by one's own efforts rather than by formal instruction.(adjective)
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.
Use "self-educated" in a sentence
"Of course, what I am talking about from my ordinary self-educated adventure guy perspective are the human factors."
"He was a plumber and an immigrant, self-educated, and passionately interested in science and the natural world."
"André Marie Ampère (1775-1836) was a self-educated French physicist and mathematician as well as a key figure in the development of the fields of electricity and magnetism."