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Synonyms

diminish

American  
[dih-min-ish] / dɪˈmɪn ɪʃ /

verb (used with object)

diminishes, present (3rd person singular) diminished, past participle, past diminishing present participle
  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)

diminishes, present (3rd person singular) diminished, past participle, past diminishing present participle
  1. to lessen; decrease.

diminish British  
/ dɪˈmɪnɪʃ /

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does diminish mean? To diminish is to become smaller, fewer, or less, as in If we don’t order more, our stock of supplies will slowly diminish until we run out completely. It can also mean to make smaller, fewer, or less, as in We need to diminish our reliance on fossil fuels. Close synonyms of these senses of diminish are reduce, decrease, and lessen. Diminish can also be used in less literal ways. It can mean to make something seem smaller or less significant, as in The senator tried to diminish his role in the scandal. The verb downplay is used in a similar way. To diminish a person is to reduce or take away from their stature, reputation, or authority in some way—to belittle or disparage them, as in The new tell-all book is clearly an attempt to diminish a man who is regarded as a legend in his field. Example: My interest in sports has diminished since I was a kid—I’m only a casual fan now.

Synonym Usage

See decrease.

Other Word Forms

Derived Forms

Etymology

Origin of diminish

First recorded in 1400–50; late Middle English; blend of diminuen (from Anglo-French diminuer, from Medieval Latin dīminuere, from Latin dēminuere “to make smaller”) and minishen minish

Explanation

Diminish means to make smaller or lesser. If you cover a lightbulb with a dark lamp shade, the light from the lamp will diminish. It can also mean become less important. Once the light has been dimmed, its role in lighting the room is diminished. If you look at diminish, you see 'minis' which comes from the Latin word minus, as in subtraction. Other words that share this root are miniature and minuscule, all of which mean something that is small, or at least smallish.

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Vocabulary lists containing diminish

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But as those buffers diminish, crude markets may once again see gains over the months ahead.

From Barron's • May 29, 2026

“So if they can kill it, or diminish it through neglect, they win. They don’t really care about the public’s opinion.”

From Los Angeles Times • May 29, 2026

Yardeni expects the Federal Reserve will turn more hawkish on interest rates during the summer, which would stall a gold rally, but the end of the Iran conflict would should help diminish that impact.

From MarketWatch • May 29, 2026

Treasury yields, which typically diminish the allure of the nonyielding asset.

From The Wall Street Journal • May 20, 2026

I honestly don’t know whether it would be better to forget or be able to remember, but it physically hurts being forced to watch Nana diminish.

From "We Are the Ants" by Shaun David Hutchinson

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