to mix /mɪks/ /mɪks/
to blend /blɛnd/ /blend/
to combine /ˈkɑmbaɪn/ /ˈkɒmbaɪn/
to mingle /ˈmɪŋɡl/ /ˈmɪŋɡl/
to socialize /ˈsoʊʃəlaɪz/ /ˈsəʊʃəlaɪz/