We found 21 dictionaries that define the word slip-up:

General (18 matching dictionaries)

1. slip-up: Oxford Learner's Dictionaries
2. slip-up: American Heritage Dictionary of the English Language
3. slip-up, slip-up: Collins English Dictionary
4. slip-up: Vocabulary.com
5. Slip-Up, slip-up: Wordnik
6. slip-up: Cambridge Advanced Learner's Dictionary
7. slip-up: Wiktionary
8. slip-up: Webster's New World College Dictionary, 4th Ed.
9. slip-up: The Wordsmyth English Dictionary-Thesaurus
10. slip-up: Infoplease Dictionary
11. slip-up: Dictionary.com
12. slip-up: Cambridge Essential American English Dictionary
13. slip-up: Rhymezone
14. slip-up: FreeDictionary.org
15. slip-up: Mnemonic Dictionary
16. slip-up: TheFreeDictionary.com

Business (1 matching dictionary)

17. slip-up: Legal dictionary

Computing (1 matching dictionary)

18. slip-up: Encyclopedia

Miscellaneous (1 matching dictionary)

19. slip-up: Idioms

(Note: See slip-ups as well.)

Definitions from Wiktionary ( ) ▸ noun:  (idiomatic) A (small) error or mistake; a (minor) misstep. Similar: slipup, slip, slip of the tongue, outslip, slip of the pen, misstep, lapsus, lapse, trip, false step, more... ▸ Words similar to slip-up ▸ Usage examples for slip-up ▸ Idioms related to slip-up ▸ Wikipedia articles (New!) ▸ Popular adjectives describing slip-up ▸ Words that often appear near slip-up ▸ Rhymes of slip-up ▸ Invented words related to slip-up