"dirtier" in the adjective sense
1. dirty, soiled, unclean
soiled or likely to soil with dirt or grime
"dirty unswept sidewalks"
"a child in dirty overalls"
"dirty slums"
"piles of dirty dishes"
"put his dirty feet on the clean sheet"
"wore an unclean shirt"
"mining is a dirty job"
"Cinderella did the dirty work while her sisters preened themselves"
2. dirty
of behavior 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. dirty, filthy, lousy
vile despicable
"a dirty (or lousy) trick"
"a filthy traitor"
4. dirty, contaminating
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"
5. dirty, pestiferous
contaminated with infecting organisms
"dirty wounds"
"obliged to go into infected rooms"- Jane Austen
6. dirty, dingy, muddied, muddy
of color) discolored by impurities not bright and clear
"dirty" is often used in combination
"a dirty (or dingy) white"
"the muddied grey of the sea"
"muddy colors"
"dirty-green walls"
"dirty-blonde hair"
7. dirty, foul, marked-up
of a manuscript) defaced with changes
"foul (or dirty) copy"
8. dirty, ill-gotten
obtained illegally or by improper means
"dirty money"
"ill-gotten gains"
9. dirty
expressing or revealing hostility or dislike
"dirty looks"
10. cheating, dirty, foul, unsporting, unsportsmanlike
violating accepted standards or rules
"a dirty fighter"
"used foul means to gain power"
"a nasty unsporting serve"
"fined for unsportsmanlike behavior"
11. dirty, sordid, shoddy
unethical or dishonest
"dirty police officers"
"a sordid political campaign"
"shoddy business practices"
12. dirty
unpleasantly stormy
"there's dirty weather in the offing"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
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