Other forms: slip-ups
A slip-up is a small careless error. A slip-up in the booking.
The hyphen makes it a noun, where the two words apart are the verb. A slip-up is forgiven where a mistake is investigated, which is why the word is chosen.
1nounslip-upA small careless error.
“One slip-up in the address cost them a week.”
slip-up is an error.
Deverbal from slip up.
Etymology from Wiktionary, CC BY-SA
Practised in Phrasal Verbs