pomešati

1. to mix; to blend
   Pomešaj brašno sa jajima. — Mix the flour with the eggs.
   Pomešala je crvenu i belu boju. — She mixed red and white paint.
2. (someone with someone) to mix up; to confuse
   Izvini, pomešao sam te sa tvojim bratom. — Sorry, I mixed you up with your brother.
   Pomešao sam datume i zakasnio. — I got the dates mixed up and was late.
3. (pomešati se) to mingle; to blend in
   Pomešao se sa gomilom i nestao. — He blended into the crowd and disappeared.

The imperfective is mešati; construction: pomešati nešto s nečim.