slip up phrasal verb ( see also ↑ slip )
to make a mistake ⇨ slip-up :
The company apologized for slipping up so badly.
slip up on
Someone had slipped up on the order.
slip up phrasal verb ( see also ↑ slip )
to make a mistake ⇨ slip-up :
The company apologized for slipping up so badly.
slip up on
Someone had slipped up on the order.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012