[ slip-uhp ]
/ ˈslɪpˌʌp /
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a mistake, blunder, or oversight: Several slip-ups caused a delay in the delivery of the books.
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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of slip-up

First recorded in 1850–55; noun use of verb phrase slip up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use slip-up in a sentence

British Dictionary definitions for slip-up

slip up

verb (intr, adverb)
informal to make a blunder or mistake; err
to fall overhe slipped up in the street
noun slip-up
informal a mistake, blunder, or mishap
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with slip-up

slip up

Make a mistake, blunder, as in I slipped up and gave the invitations to the wrong people. [Mid-1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.