Marked by or exhibiting a lack of reliability. (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 "unreliable" in a sentence
"With Stella you have added to a literary history rich in unreliable narrators."
"In Cooked Books, Tyler Cowen explains that the sad truth is that “non-fiction” has been unreliable from the beginning:"
"The sad truth is that “non-fiction” has been unreliable from the beginning, no matter how finely grained a section of human knowledge we wish to consider."