mix up (1)
Meaning: If you mix up two or more things, you forget which one is which.Synonym: confuse
- mix sb/sth up The twin boys look so much alike that it's really easy to mix them up.
- mix up sb/sth I mixed up the dates and went to the restaurant on Friday instead of Saturday - and nobody else was there!
mix up (1): names, dates, days, numbers
I mixed up the invoice numbers, and sent the shipment to