Diminish (verb)

1. Make or become smaller or less.
2. Reduce in size, amount, or degree.
3. Lessen the authority, status, or reputation of.
4. Decrease in size, amount, intensity, or degree.
5. To make something smaller or less important.

Origin:

Middle english: from old french diminiss-, lengthened stem of diminir, from latin diminuere, from di- "away" + minuere "lessen".

Examples:

1. The number of employees has diminished over the years.
2. His influence has diminished over time.
3. The storm diminished in intensity.
4. The pain diminished after taking the medication.
5. The value of the property diminished over time.