Dictionarymuststale odor
noun

must

A stale, moldy smell

A faint smell of must lingers in the closed basement.

Etymology

Origin uncertain. The stale-smell word is associated with musty, but a specific derivation from the wine word is not established.

More examples

  • The old blankets carry a strong odor of must.
  • Opening the windows helps clear the must from the room.
  • The closet smells of must after months of damp weather.

Forms

must

musty adjective — Having a stale, damp, moldy smell.

Similar words

mustiness
Names the same stale-smelling quality and is more commonly used.