Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Verb: muddy up
Usage: informal
  1. Dirty with mud
    "The kids muddied up their shoes playing in the rain";
    - muddy

Derived forms: muddied up, muddying up, muddies up

Type of: begrime, bemire [archaic], colly [archaic], dirty, grime, soil