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1. Not clean, or likely to soil with dirt or grime
   "dirty unswept pavements"; "a child in dirty overalls"; "dirty slums"; "piles of dirty dishes"; "put his dirty feet on the clean sheet"; "mining is a dirty job"; "Cinderella did the dirty work while her sisters preened themselves";
   - soiled, unclean
    
2. (of behaviour or especially language) characterized by obscenity or indecency
   "dirty words"; "a dirty old man"; "dirty books and movies"; "boys telling dirty jokes"; "has a dirty mouth"
    
3. Vile; despicable
   "a dirty trick";
   - filthy, lousy, cruddy
    
4. 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";
   - contaminating
    
5. Contaminated with infecting organisms
   "dirty wounds";
   - pestiferous
    
6. (of colour) discoloured by impurities; not bright and clear
   "dirty"; "a dirty white"; "dirty-green walls"; "dirty-blonde hair";
   - dingy, muddied, muddy
    
7. (of a manuscript) defaced with changes
   "dirty copy";
   - foul, marked-up
    
8. Obtained illegally or by improper means
   "dirty money";
   - ill-gotten, misbegotten
    
9. Expressing or revealing hostility or dislike
   "dirty looks"
    
10. Violating accepted standards or rules
    "a dirty fighter";
    - cheating, foul, unsporting, unsportsmanlike
     
11. Unethical or dishonest
    "dirty police officers";
    - sordid
     
12. Unpleasantly stormy
    "there's dirty weather in the offing"

1. Make soiled, filthy, or dirty
   "don't dirty your clothes when you play outside!";
   - soil, begrime, grime, colly [archaic], bemire [archaic]

1. In an unfair manner
   - unfairly, below the belt
    
2. [Brit] Used as an intensifier
   "watching the cricket with a dirty big grin";
   - very, really, real [N. Amer], rattling, extremely, thoroughly, exceedingly, enormously, tremendously, hugely, staggeringly

Derived forms: dirtied, dirtier, dirtying, dirties, dirtiest

See also: Augean, awful, bawdy, bedraggled, befouled, begrimed, black, blasphemous, blue, buggy, cleanness, cobwebbed, cobwebby, corrupt, cruddy, dingy, dirty-faced, dirty-minded, draggled, feculent, filthy, flyblown, foul, fouled, foul-mouthed, foul-spoken, greasy, grimy, grubby, grungy, hostile, illegal, illegible, impure, indecent, infected, lewd, lousy, maculate, mucky, muddy, nasty, obscene, off-color [US], off-colour [Brit, Cdn], oily, procellous [archaic], profane, ratty, raunchy, ribald, salacious, scabrous, scatological, scroungy [US], scummy, septic, smudgy, smutty, snot-nosed, snotty, sooty, sordid, squalid, stormy, travel-soiled, travel-stained, uncleanly [archaic], unfair, unjust, unswept, untidy, unwashed

Type of: alter, change, modify

Antonym: clean

Encyclopedia: Dirty, Dangerous and Demanding Dirty Dirty, Dangerous and Demeaning Dirty, Dirty Feeling Dirty, Dangerous and Difficult