dirty :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
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
dirty :vile; despicable
a dirty (or lousy) trick|a filthy traitor
dirty :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
dirty :contaminated with infecting organisms
dirty wounds|obliged to go into infected rooms
dirty :(of color) discolored by impurities; not bright and clear
dirty|a dirty (or dingy) white|the muddied grey of the sea|muddy colors|dirty-green walls|dirty-blonde hair