/ Dictionary / Index D diminish: Meaning and Definition of Find definitions for: di•min•ish Pronunciation: (di-min'ish), [key] — v.t. to make or cause to seem smaller, less, less important, etc.; lessen; reduce. to give (a column) a form tapering inward from bottom to top. to make (an interval) smaller by a chromatic half step than the corresponding perfect or minor interval. to detract from the authority, honor, stature, or reputation of; disparage. —v.i. to lessen; decrease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diminish (Thesaurus) dimin. diminishing returns Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language