Dingy (adjective)

1. Dark and dirty, especially as a result of neglect or age.
2. Lacking brightness or freshness, dull.
3. Not clean or well-maintained.

Origin:

Origin of the word is uncertain, but it has been in use since the late 16th century.

Examples:

1. The dingy room was in desperate need of a cleaning.
2. The dingy clothes were a sign of poverty.
3. The dingy atmosphere of the pub made it an uninviting place to be.
4. The dingy streets were not a pleasant place to walk.
5. The dingy office was in need of renovation.