YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
The definition of a slip up is a mistake or error.
An example of a slip up is when you mix up numbers in a report you are writing and write "12" when the number should be "21."
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- an error or oversight
- an unlucky happening; mishap
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An error; an oversight.
slip-up - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Make a mistake, blunder, as in I slipped up and gave the invitations to the wrong people. [Mid-1800s]