adjective. Made dirty with muddied.

adjective. Made unclear, obfuscated (generally as part of the phrase muddied the water)

adjective. Made muted of color.

verb. Simple past tense and past participle of muddy.

adjective. (of color) discolored by impurities; not bright and clear

"YELLIN: Well, there have been a number of reports that there is disarray in the campaign, finger pointing, anger about what some call a muddied message by Senator Clinton."

impure  

bloodied  studied  

muddy