musty

As a noun mildew

is a growth of minute powdery or webby fungi, whitish or of different colors, found on various diseased or decaying substances.

As a verb mildew

is to taint with mildew.

As an adjective musty is

having a stale odor.

As adjectives the difference between musty and false

is that musty is having a stale odor while false is (label) one of two states of a boolean variable; logic.

As adjectives the difference between musty and undefined

is that musty is having a stale odor while undefined is lacking a definition or value.

Aged is a related term of musty.

As adjectives the difference between aged and musty

is that aged is while musty is having a stale odor.

Ragged is a related term of musty.

As adjectives the difference between ragged and musty

is that ragged is rent or worn into tatters, or till the texture is broken while musty is having a stale odor.

As a verb ragged

is (rag).

Passe is a related term of musty.

As a noun passe

is .

As an adjective musty is

having a stale odor.

As adjectives the difference between ancient and musty

is that ancient is having lasted from a remote period; having been of long duration; of great age; very old while musty is having a stale odor.

As a noun ancient

is a person who is very old.

Mature is a related term of musty.

As a noun mature

is masts (of a ship).

As an adjective musty is

having a stale odor.

Frail is a related term of musty.

As adjectives the difference between frail and musty

is that frail is easily broken; mentally or physically fragile; not firm or durable; liable to fail and perish; easily destroyed; not tenacious of life; weak; infirm while musty is having a stale odor.

As a noun frail

is a basket made of rushes, used chiefly for containing figs and raisins.

As a verb frail

is to play a stringed instrument, usually a banjo, by picking with the back of a fingernail.

As adjectives the difference between crusty and musty

is that crusty is pertaining to or having a crust, as, for example, in the case of bread while musty is having a stale odor.

As a noun crusty

is a tramp or homeless young person with poor cleanliness.