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Synonyms

malfunction

American  
[mal-fuhngk-shuhn] / mælˈfʌŋk ʃən /

noun

malfunctions plural
  1. failure to function properly.

    a malfunction of the liver; the malfunction of a rocket.


verb (used without object)

malfunctions, present (3rd person singular) malfunctioned, past participle, past malfunctioning present participle
  1. to fail to function properly.

malfunction British  
/ mælˈfʌŋkʃən /

verb

  1. (intr) to function imperfectly or irregularly or fail to function

"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

noun

  1. failure to function or defective functioning

"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 malfunction

First recorded in 1925–30; mal- + function

Explanation

To malfunction is to fail to work properly. If your toaster spits out a charred, smoky mess no matter what setting it’s on, your toaster is definitely malfunctioning. When something functions, it works. Adding the prefix -mal (meaning "bad") to function indicates bad or unsuccessful functioning. When a computer malfunctions, you could lose your data. A malfunctioning car could cause an accident or leave you stranded. This word is typically used in reference to technology, tools, and gadgets. However, if you make a stupid mistake, you might joke that your brain has malfunctioned.

Keep Reading on Vocabulary.com

Vocabulary lists containing malfunction

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:

“A fireworks malfunction did occur during last night’s post-match celebration at Angel City FC’s game vs. Orlando at BMO Stadium,” the team said in a statement to The Times.

From Los Angeles Times Jul. 5, 2026

The college added there are numerous reports of older patients being brought in after collapsing because of dehydration and said its members have linked the extreme heat to causing machines and equipment to malfunction.

From BBC Jun. 25, 2026

Earlier, Qatar's interior ministry had described Sunday's incident as an "internal explosion" and a "technical malfunction".

From Barron's Jun. 22, 2026

"Showing that the process of protein production loses fidelity with aging provides a kind of underlying rationale for why all these other processes start to malfunction with age," said Frydman.

From Science Daily May 29, 2026

“It looks like we have a temporary malfunction, but it will soon be fixed.”

From "Warcross" by Marie Lu

Tech companies are making progress in fixing humanoid runners’ malfunctions.

From The Wall Street Journal Apr. 20, 2026

In a tongue-in-cheek post to Instagram, Glass Animals - best known for their 2020 sleeper-hit Heat Waves - claimed culpability for the lunar lavatory malfunctions.

From BBC Apr. 10, 2026

Those recorded cues act as a fail-safe against technical malfunctions during the broadcast, though the orchestra aims to play everything live.

From Los Angeles Times Mar. 13, 2026

Satellites passing through this region are exposed to elevated levels of radiation, increasing the risk of technical malfunctions, hardware damage, and even temporary outages.

From Science Daily Feb. 25, 2026

On one wall, flashers and safety overrides blinked to indicate that there were electric malfunctions and topside failures, probably from having the conning deck go under.

From "Ship Breaker" by Paolo Bacigalupi

On May 28, a fiery mushroom cloud enveloped Cape Canaveral as New Glenn’s engine malfunctioned during a pre-flight test, blowing up the rocket, launch pad and other nearby infrastructure.

From MarketWatch Jun. 10, 2026

The vehicle had coasted through space but was not in exactly the correct orbit after one of its engines malfunctioned during an initial burn.

From Barron's May 22, 2026

“The likelihood that the M767A1 fuze malfunctioned is a statistical anomaly that was outside any reasonable probability.”

From Los Angeles Times Mar. 16, 2026

The roughly 40 data centers, which had been using enough electricity to supply more than one million homes, simultaneously switched to backup power sources in February 2025, when a high-voltage power line malfunctioned.

From The Wall Street Journal Mar. 1, 2026

During the first orbit, the automatic control system malfunctioned.

From "Reaching for the Moon" by Katherine Johnson

The director, recently freed from a malfunctioning elevator in a pithily Andersonian incident, made a brief appearance onstage with Murray in his regal white suit.

From Los Angeles Times Jul. 11, 2026

I have a similar complaint, but this relates to a toilet that is malfunctioning.

From MarketWatch Jun. 10, 2026

The party had weak local roots, "a malfunctioning party machine" and was mired in legal troubles, she told AFP.

From Barron's Mar. 23, 2026

The robot is malfunctioning and in need of a reset.

From BBC Jan. 22, 2026

“Everything’s going to be okay, sweetheart,” she says because she’s a people-mechanic and always knows when I’m malfunctioning.

From "I'll Give You the Sun" by Jandy Nelson

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