The condition of being uneducated, unaware, or uninformed.(noun)
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 "ignorance" in a sentence
"There is an ignorance that is sought on purpose, called _affected ignorance_ (in the Shakspearian sense of the word _affect_), as when a man will not read begging-letters, that he may not give anything away."
"With regard to life's origin ignorance is depicted as a gap which will eventaully be overcome with evidence backing mainstream conceptions - the promissory note."
"As for me personally, I think conservatives living in ignorance is pretty damn funny – so I would never try to change your mind."