filth

Etymology

From Middle English filth, from Old English fȳlþu, from Proto-West Germanic *fūliþu, equivalent to foul + -th.

noun

1. Dirt; foul matter; that which soils or defiles.
   Before we start cooking we need to clean up the filth in this kitchen.
2. Smut; that which sullies or defiles the moral character; corruption; pollution.
   He spends all his time watching filth on pornographic websites.
3. (derogatory, uncountable) A vile or disgusting person.
   I think you're scum, I think you're filth. And as far as Elaine's concerned you're to get her out of your filthy mind right now. 1963, Charles Webb, The Graduate
   They were filth, utter filth. I mean, and this tops it. She even bought the video of her sister dying, or at least the sex act that killed her. 2011, Jeremy Robert Hall, Summer Days
4. (US, agriculture, dated) Weeds growing on pasture land.
   Grampa remembers when he had to cut filth with a scythe.

noun

1. (UK, derogatory, slang) The police.
   We were in the middle of stashing the money when the filth arrived.