Not deliberate or intentional; inadvertent: an unintentional pun. (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 "unintentional" in a sentence
"In an announcement, the Supreme Council of the Armed Forces said it regretted what it called "unintentional confrontations between the military police and the youth of the revolution.""
"It is a terrible tragedy that fear of being racist actually results in unintentional discrimination. on February 10, 2010 at 6: 05 pm Twining"
"But the original headline shows how omitting that can result in unintentional absurdity."