dirty

unpleasantly stormy

there's dirty weather in the offing

soiled or likely to soil with dirt or grime

dirty unswept sidewalks

a child in dirty overalls

(of behavior or especially language) characterized by obscenity or indecency

dirty words

a dirty old man

spreading pollution or contamination; especially radioactive contamination

the air near the foundry was always dirty

a dirty bomb releases enormous amounts of long-lived radioactive fallout

unethical or dishonest

dirty police officers

a sordid political campaign

violating accepted standards or rules

a dirty fighter

used foul means to gain power

expressing or revealing hostility or dislike

dirty looks

obtained illegally or by improper means

dirty money

ill-gotten gains

(of a manuscript) defaced with changes

foul (or dirty) copy

vile; despicable

a dirty (or lousy) trick

a filthy traitor

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

dirty" is often used in combination

a dirty (or dingy) white

make soiled, filthy, or dirty

don't soil your clothes when you play outside!