S: (adj) 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"
W: (adj) clean [Indirect via dirty] (free from dirt or impurities; or having clean habits) "children with clean shining faces"; "clean white shirts"; "clean dishes"; "a spotlessly clean house"; "cats are clean animals"