GNU Collaborative International Dictionary of English

last match results

Found one definition

1.       
   mix up n.
   1. To confuse the identities of (two or more objects); to mistake (one object for another); as, “at the family gathering he mixed up his two nieces, to their great amusement”.
   
   [PJC]
   
   
   2. To mix together; -- usually implying a mistake, whether done intentionally or unintentionally; as, “the mixed up this year's receipts with last year's, and it took hours to find the right ones”.
   
   [PJC]