Smelling of mildew or decay
Without freshness or appeal because of overuse
Stale with age
The stones were dark, the air musty, the ceiling low.
It smelled of musty parchment pages that were cut in different sizes and poorly bound.
A strong growth of the fungus gives the appearance of mildew on the wood, and produces an unpleasant musty smell.
The room had a musty closed-up smell and looked like a thousand other motel rooms in a thousand other cities.
The mine tunnel narrowed and the pair was forced to hunch down under the low ceiling that closed in the fetid air around them like a soaked and musty blanket.