grimy

This term describes a specific type of filth that is tactile and clinging, often associated with industrial pollutants like coal dust, engine oil, or long-term neglect. It suggests a surface that would feel sticky or greasy to the touch, rather than just being dusty or superficially dirty.

In social contexts, the word often carries a negative connotation of urban decay or poor hygiene. It is frequently used to describe city environments, old workshops, or neglected interiors to evoke a sense of gloom and physical unpleasantness.