"Filthy" typically refers to something that is very dirty or unclean. It can describe physical objects, environments, or even behaviors that are considered inappropriate or offensive. For example, a dirty room or unclean clothes can be described as filthy due to the presence of dirt, grime, or unpleasant odors. In a broader context, "filthy" can also refer to language or content that is vulgar or obscene. This usage often applies to explicit lyrics in music or adult films that contain graphic material. The term emphasizes a strong negative reaction to the level of inappropriateness or lack of cleanliness.