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dilute

American  
[dih-loot, dahy-, dahy-loot] / dɪˈlut, daɪ-, ˈdaɪ lut /

verb (used with object)

dilutes, present (3rd person singular) diluted, past participle, past diluting present participle
  1. to make (a liquid) thinner or weaker by the addition of water or the like.

  2. to make fainter, as a color.

  3. to reduce the strength, force, or efficiency of by admixture.

    Synonyms:
    diminish, mitigate, temper, weaken

verb (used without object)

dilutes, present (3rd person singular) diluted, past participle, past diluting present participle
  1. to become diluted.

adjective

  1. reduced in strength, as a chemical by admixture; weak.

    a dilute solution.

dilute British  
/ daɪˈluːt /

verb

  1. to make or become less concentrated, esp by adding water or a thinner

  2. to make or become weaker in force, effect, etc

    he diluted his story

"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

adjective

  1. chem

    1. (of a solution, suspension, mixture, etc) having a low concentration or a concentration that has been reduced by admixture

    2. (of a substance) present in solution, esp a weak solution in water

      dilute acetic acid

"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

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Etymology

Origin of dilute

1545–55; < Latin dīlūtus washed away, dissolved (past participle of dīluere ), equivalent to dī- di- 2 + -lūtus, combining form of lautus ( lav ( ere ) to wash + -tus past participle suffix)

Explanation

When you dilute something, you make it thinner, weaker, or more watered down. If you put lots of ice cubes in your soda, the ice will melt and dilute the drink. Think about diluting as lessening the quality but increasing the quantity. Unless you're diluting a really strong drink to make it taste better or diluting heavy paint to get a lighter shade — then the quality actually improves. Quipped President John F. Kennedy, “Public speaking is the art of diluting a two-minute idea with a two-hour vocabulary.”

Keep Reading on Vocabulary.com

Vocabulary lists containing dilute

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.

See Examples For:

Honeybees gather pollen from many different flower species, which may dilute contaminants across their food supply.

From Science Daily Jul. 7, 2026

The former is bad news; selling more common shares of a stock in free fall would dilute existing shareholders and push the price even lower.

From The Wall Street Journal Jun. 30, 2026

But for a fair number of others, the main objection is that Summerween cheapens Halloween — that to celebrate a summer facsimile will dilute the real thing.

From Salon Jun. 30, 2026

“When I tried to dilute it into the purest essence,” she says, “it felt like safety.”

From Los Angeles Times Jun. 29, 2026

“We have to overwhelm the nymphs with fresh water, give them more than they can use. If we can dilute this poisonous stuff—” “Can your horn do that?”

From "The Mark of Athena" by Rick Riordan

In adapting the premise for TV, series creator Nick Antosca dilutes the movies’ naked menace by pouring reasonable doubt into both Max’s profile and that of the Bowdens, the married lawyers behind his downfall.

From Salon Jul. 17, 2026

Investors also aren’t thrilled with the impact of the company’s capital raising—most recently $550 million External link from entities connected with the Saudi Public Investment Fund—which dilutes the value of existing shareholders’ stock.

From Barron's Jun. 22, 2026

George Washington’s greatness is so firmly established that it dilutes our appreciation of the man.

From The Wall Street Journal May 22, 2026

Led by Keke Palmer and Jack Whitehall and featuring a quirky cast of characters, Peacock’s horror-comedy mystery series dilutes some the suspense but it’s still a good time.

From Los Angeles Times Feb. 8, 2026

In this way it dilutes itself, and may increase its weight threefold.

From An Introduction to Chemical Science by Williams, Rufus Phillips

In the human digestive system, sweeteners may be absorbed, chemically altered, diluted, or broken down before reaching particular microbes.

From Science Daily Jul. 17, 2026

The valuation rises to £5.52 billion on a fully diluted basis.

From The Wall Street Journal Jul. 6, 2026

That announcement sent shares of Solidion, which has a market value of about $140 million based on fully diluted shares outstanding, up 14.3% in premarket trading at $14.10 a share.

From Barron's Jun. 29, 2026

By the time Emmet Sheehan took the mound, the smell had diluted, and the sunshine broke through the haze.

From Los Angeles Times Jun. 21, 2026

Lister recommended that doctors put a diluted carbolic acid solution on wounds after injury or surgery and also soak bandages and dressings in the chemical.

From "Ambushed!" by Gail Jarrow

The move solves an immediate headache by covering Strategy’s preferred dividend obligations, but it does so through the painful, if familiar, route of diluting common shareholders.

From Barron's Jun. 26, 2026

At the same time, the rapid rise of third-party delivery apps has flooded the market with alternative options, diluting Pizza Hut's historic dominance.

From BBC Jun. 16, 2026

To pay this tax, companies would have to issue new shares to the government diluting current shareholders.

From The Wall Street Journal Jun. 5, 2026

“Disjointed colors, patterns, and logo-heavy designs are diluting brand equity,” he said.

From MarketWatch Jun. 5, 2026

We could cure Daoud right now, or we could try to save more people—like my parents—by conserving every drop and diluting it....But in doing so, we might end up with nothing.

From "City of the Plague God" by Sarwat Chadda

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