diminish

verb (used with object)

1. to make or cause to seem smaller, less, less important, etc.; lessen; reduce.
2. Architecture. to give (a column) a form tapering inward from bottom to top.
3. Music. to make (an interval) smaller by a chromatic half step than the corresponding perfect or minor interval.
4. to detract from the authority, honor, stature, or reputation of; disparage.

verb (used without object)

5. to lessen; decrease.

verb

1. to make or become smaller, fewer, or less
2. (tr) architect to cause (a column, etc) to taper
3. (tr) music to decrease (a minor or perfect interval) by a semitone
4. to belittle or be belittled; reduce in authority, status, etc; depreciate