줄다

For an object's length, area, volume, etc. to become smaller than the original.

For an amount or quantity to become smaller than the original.

For one's force or power to become smaller than it used to be.

For a skill, ability, capability, etc., to become worse than it used to be.

For one's financial situation to deteriorate or become worse than it used to be.

For a time or period to become shorter.