Grimy (adjective)

1. Dirty with grime.
2. Having a dirty or soiled appearance.
3. Lacking in cleanliness.

Origin:

From middle english gryme, from old english grīma.

Examples:

1. She washed her grimy hands.
2. The grimy city streets were covered in trash.
3. His grimy clothes were in need of a wash.
4. The grimy windows were hard to see through.
5. The grimy old building was in desperate need of a cleaning.