Definition of mixum-gatherum in English:

mixum-gatherum

(also mixem gatherem, mix-um gather-um)

noun

informal
  • A miscellaneous or confused collection of persons or things; a hotchpotch, a muddle.

Origin

Mid 19th century; earliest use found in John Banim (1798–1842), novelist and playwright. From classical Latin mixtum, neuter of mixtus mixed + -gatherum, after omnium gatherum.

Pronunciation

mixum-gatherum

/ˌmɪksəmˈɡað(ə)rəm/