quadruple

American  

[kwo-droo-puhl, -druhp-uhl, kwod-roo-puhl] / kwɒˈdru pəl, -ˈdrʌp əl, ˈkwɒd rʊ pəl /

adjective

1. fourfold; consisting of four parts.

   a quadruple alliance.

2. four times as great.

3. Music. having four beats to a measure.

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noun

1. a number, amount, etc., four times as great as another.

2. something, as a series of acrobatic somersaults, made up of four clearly defined parts or stages.

   the first trapeze artist to perform a quadruple successfully.

verb (used with or without object)

• quadruples,
  present (3rd person singular)
• quadrupled,
  past participle,  past
• quadrupling
  present participle

1. to make or become four times as great.

   To serve 24 people, quadruple the recipe. My savings quadrupled in 20 years.

quadruple British  

/ kwɒˈdruːpəl, ˈkwɒdrʊpəl /

verb

1. to multiply by four or increase fourfold

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adjective

1. four times as much or as many; fourfold

2. consisting of four parts

noun

1. a quantity or number four times as great as another

Other Word Forms

Derived Forms

• quadrupleness
  noun
• quadruply
  adverb

Inflected Forms

Participles

• quadrupling
  present
• quadrupled
  past

Conjugated Forms

Present

• quadruple
  simple
• quadruples
  simple
• have quadrupled
  perfect
• has quadrupled
  perfect
• am quadrupling
  progressive
• are quadrupling
  progressive
• is quadrupling
  progressive
• have been quadrupling
  perfect progressive
• has been quadrupling
  perfect progressive

Past

• quadrupled
  simple
• had quadrupled
  perfect
• was quadrupling
  progressive
• were quadrupling
  progressive
• had been quadrupling
  perfect progressive

Future

• will quadruple
  simple
• will have quadrupled
  perfect
• will be quadrupling
  progressive
• will have been quadrupling
  perfect progressive

Etymology

Origin of quadruple

1325–75; Middle English < Latin quadruplus; cf. quadru-, duple

Explanation

When something is made up of four parts, you can describe it using the adjective quadruple, like a young gymnast's quadruple somersault. A common use of quadruple is in the medical term "quadruple bypass," which is a type of heart surgery that involves all four chambers of the patient's heart. You can also use quadruple to mean "four times as many," as when you order a quadruple-shot latte, with four shots of espresso. The Latin root word quadruplare, "make fourfold," comes from the suffix quadri-, or "four."

Example Sentences

See Examples For:

quadruple quadruples quadrupled quadrupling

Their rates start at 260 percent annually, quadruple those of banks, with the payments deducted from the workers' earnings.

From Barron's ● Aug. 18, 2026

The proposed fracking plan would quadruple production on an aging offshore platform in the Santa Barbara Channel.

From Los Angeles Times ● Aug. 14, 2026

The 24-year-old, who's gunning for a historic quadruple win at the event this week, told BBC Newsbeat "the glam definitely helps that mentality because sprinting is such a confidence game".

From BBC ● Aug. 14, 2026

In California, a mining company is scrapping with environmentalists over an expansion plan meant to quadruple gold output.

From The Wall Street Journal ● Aug. 12, 2026

Uncle Carlos pushed the quadruple stroller back and forth, trying to put his four kids to sleep.

From "The Epic Fail of Arturo Zamora" by Pablo Cartaya

When financing costs are added, the costs to ratepayers’ quadruples to more than $340 billion over the life of these projects.

From The Wall Street Journal ● Mar. 4, 2026

Arteta certainly won't be talking about quadruples just yet - but Arsenal fans can dream can't they?

From BBC ● Feb. 3, 2026

Huang and her team have shown that their approach quadruples the resolution of conventional transmission electron microscopes.

From Science Daily ● Feb. 26, 2024

He doubles, triples or quadruples the valuations of his assets in order to get loans from creditors, and drastically undervalues them to evade taxes.

From Salon ● Oct. 3, 2023

The flower quadruples in size, and the petals lengthen to catch her.

From "The Belles" by Dhonielle Clayton

For example, in Missouri — where abortion access is highly restrictive with limited exceptions for medical emergencies— the number of medication abortions has quadrupled since 2023.

From Salon ● Aug. 19, 2026

The stock quadrupled in value before most of those gains were wiped out, leaving his investment, now worth about 300 million won, at roughly half the value of its peak.

From BBC ● Aug. 13, 2026

By Monday afternoon, it had more than quadrupled in size.

From Los Angeles Times ● Aug. 11, 2026

Its stock nearly has quadrupled in the past 12 months, and has gained more than 90% so far this year.

From MarketWatch ● Jul. 28, 2026

Eventually they discovered that an elongated teardrop shape, with the wide end oriented toward the magnet’s center, quadrupled the maximum potential acceleration to 300 steps, or 150 complete circuits.

From "Big Science" by Michael Hiltzik

After almost quadrupling from May 2025, the temptation to book profits had become irresistible.

From MarketWatch ● Jul. 8, 2026

That has contributed to the share price more than quadrupling this year so far.

From Barron's ● Jun. 30, 2026

Earlier this year, Lewin funneled $3.8 billion to a small arm of the United Nations, the Office for the Coordination of Humanitarian Affairs, quadrupling the budget of the agency.

From Salon ● Jun. 23, 2026

California defense tech startup Mach Industries said Tuesday it raised $300 million, nearly quadrupling the company’s valuation to $1.8 billion within a year.

From Los Angeles Times ● Jun. 3, 2026

I start to pedal like my life depends on it, my RPM quadrupling.

From "Five Feet Apart" by Rachael Lippincott