MUS'TY, a. [from must.] Moldy; sour; foul and fetid; as a musty cask; musty corn or straw; musty books.

1. State; spoiled by age.

The proverb is somewhat musty.

2. Having an ill flavor; as musty wine.

3. Dull; heavy; spiritless.

That he may not grow musty and unfit for conversation.