Definition of mixy-matchy in English:

mixy-matchy

Pronunciation /ˌmɪksɪˈmatʃi/

adjective

informal US
  • Especially of decor or clothing: characterized by mixing and matching; consisting of a blend of harmonious colours, patterns, styles, etc. Compare to mix and match.

Origin

1960s. From mix + -y + match + -y, after to mix and match and mix-and-match [noun].