d, p, m, u, y are letters that make 'muddy up'
DD, mud, mu, muddy, up, Dy are words within 'muddy up'
1 possible definitions for 'muddy up'
Under this definition, muddy up is a verb and has the following properties:
muddy has the same meaning as muddy up
'muddy up' can be a type of begrime, colly, bemire, soil, grime, dirty.