dirty - verb

• make soiled, filthy, or dirty

dirty - adjective

• soiled or likely to soil with dirt or grime
• (of behavior or especially language) characterized by obscenity or indecency
• spreading pollution or contamination; especially radioactive contamination
• vile; despicable
• contaminated with infecting organisms
• (of color) discolored by impurities; not bright and clear
• (of a manuscript) defaced with changes
• obtained illegally or by improper means
• expressing or revealing hostility or dislike
• violating accepted standards or rules
• unethical or dishonest
• unpleasantly stormy

dirty - thesaurus

begrime   bemire   cheating   colly   contaminating   dingy   filthy   foul   grime   lousy   muddied   muddy   pestiferous   soil   soiled   sordid   unclean   unsporting   unsportsmanlike