► dirty not clean: · His clothes were untidy and he had dirty hands.
► filthy very dirty: · Each year filthy water causes millions of cases of illness.
► muddy covered with mud: · It had been raining hard and the path was muddy.
► dusty covered with dust: · the dusty shelves in the attic
► greasy covered with oil or grease: · Greasy food is bad for your health.
► grubby (also mucky British English) informal fairly dirty and needing to be cleaned or washed: · He was wearing a grubby white T-shirt.· mucky fingers
► grimy covered with thick dirt or dirt that has been there a long time: · I couldn’t see much out of the grimy windows of the train.
► dingy looking dark, dirty, and unpleasant. Used about rooms, houses, and buildings: · We worked in a dingy little office behind the station.
► polluted used about land, water, or air that has been made dirty: · 85% of city dwellers breathe heavily polluted air.
► contaminated made dirty by a dangerous substance or bacteria: · The virus is mainly spread through contaminated food.
► squalid formal extremely dirty and unpleasant. Used about the place or conditions in which someone lives: · People are living in squalid conditions, with little water and no sanitation.
► unhygienic formal used about dirty conditions that are likely to cause disease, especially conditions in kitchens, restaurants, and hospitals: · The food was prepared under unhygienic conditions.
► unsanitary (also insanitary British English) formal used about dirty conditions that are likely to cause disease, especially because there is not a good system for getting rid of waste: · People’s health is being threatened by overcrowded and insanitary homes.· They work for long hours in unsanitary conditions.
► soiled formal made dirty, especially by waste from your body: · Soiled nappies should be changed as quickly as possible.