| adjective | disgustingly dirty; filled or smeared with offensive matter “as filthy as a pigsty” |
| adjective | vile; despicable “a dirty (or lousy) trick” |
| adjective | characterized by obscenity “had a filthy mouth” |
| filth | noun | the state of being covered with unclean things |
| filthiness | noun | a state characterized by foul or disgusting dirt and refuse |
| foulness | noun | a state characterized by foul or disgusting dirt and refuse |
| nastiness | noun | a state characterized by foul or disgusting dirt and refuse |
| lousiness | noun | the quality of being disgusting to the senses or emotions |
| smuttiness | noun | obscenity in speech or writing |
| smut | noun | an offensive or indecent word or phrase |