Wrong or incorrect in opinion, understanding, or perception.(adjective)
Based on error; wrong: a mistaken view of the situation. (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 "mistaken" in a sentence
"_ Of course, if he had _seen_, he was mistaken, he would have ceased to _be mistaken_."
"As it is they are continually reproaching me with what they call my mistaken clemency, and there would be no restraining them did they know of this."
"He blamed the failure on what he called mistaken concern over the Church's reputation."