dirty vs muddy

dirty and muddy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dirty	No	Yes	Yes	No
muddy	No	Yes	Yes	No

As adjectives, dirty and muddy are synonyms defined as:

dirty and muddy: (of color) discolored by impurities; not bright and clear

Other synonyms of dirty include dingy, muddied.

As verbs, muddy is a hyponym of dirty; that is, muddy is a word with a more specific, narrower meaning than dirty:

Other hyponyms of dirty include foul, contaminate, foul, pollute, smear, slime, muddy up, splash, mire, muck, muck up, mud, crock, blemish, spot.

dirty (adjective)	muddy (adjective)
soiled or likely to soil with dirt or grime	dirty and messy; covered with mud or muck
(of behavior or especially language) characterized by obscenity or indecency	(of color) discolored by impurities; not bright and clear
spreading pollution or contamination; especially radioactive contamination	(of liquids) clouded as with sediment
unethical or dishonest	(of soil) soft and watery
expressing or revealing hostility or dislike
obtained illegally or by improper means
(of a manuscript) defaced with changes
(of color) discolored by impurities; not bright and clear
vile; despicable
contaminated with infecting organisms
unpleasantly stormy
violating accepted standards or rules