covered in or full of mud:they changed their muddy boots not bright or clear; dirty-looking:the original colours were blurred into muddy pink and yellow (of a sound, especially in music) not clearly defined:an awful muddy sound that renders his vocals incoherent confused, vague, or illogical:some sentences are so muddy that their meaning can only be guessed
cover or fill (something) with mud: the linoleum flooring was muddied make (something) hard or harder to understand:the first year’s results muddy rather than clarify the situation