Dictionary.com
Thesaurus.com
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

Other Word Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future


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:

The trouble isn’t that every digital convenience is destined to malfunction.

From Salon ● Oct. 17, 2026

Volatility was contained, and trading was orderly—not a malfunction but the machine doing its job.

From The Wall Street Journal ● Aug. 24, 2026

When gene activation goes wrong, cells can malfunction and contribute to diseases, including cancer.

From Science Daily ● Aug. 23, 2026

Not only that, the cartographic malfunction included completely unrecognisable shapes of the six misidentified countries.

From BBC ● Jul. 31, 2026

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

From "Warcross" by Marie Lu

Its report said Nintendo had "commented only in 2020, and not as soon as it was aware of the malfunctions", the Commerce Ministry and the court in Nanterre, outside Paris, said in a statement.

From Barron's ● Jun. 8, 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

He policed brushback pitches with ardor and once called a night game for darkness when lighting malfunctions compromised visibility near home plate.

From The Wall Street Journal ● Feb. 26, 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

Unlike early Soviet space capsules, which were automated, American spacecraft required experienced pilots at the controls in case of malfunctions.

From "Women in Space" by Karen Bush Gibson

The train drivers’ union responded that regardless of any subsequent human error, the LZB system that had already malfunctioned caused the dangerous situation.

From The Wall Street Journal ● Oct. 30, 2026

The truck's air conditioning malfunctioned, and the temperature inside soared as it drove north to San Antonio, Texas.

From Barron's ● Oct. 20, 2026

In fact, the devices appear to have malfunctioned.

From BBC ● Sep. 4, 2026

The transmission malfunctioned in his 1978 boat, Miss Julie, which he also uses for crabbing.

From The Wall Street Journal ● Aug. 21, 2026

It was like something inside of him had malfunctioned, and he was going to keep rambling until his batteries died.

From "We Are the Ants" by Shaun David Hutchinson

Several of these processes involve malfunctioning mitochondria, the tiny structures responsible for producing much of a cell's energy.

From Science Daily ● Oct. 27, 2026

The story, as it were, centers on a woman named Lisa Blupey, portrayed by stage veteran Jessica Vosk, who runs a small business selling socks but is drowning in financial statements and malfunctioning A.I.-powered platforms.

From Slate ● Oct. 1, 2026

It started appearing in my parents’ pantry in Costco two-packs, usually beside gigantic cases of bottled water, enough paper towels to absorb a malfunctioning sprinkler system and gallon-sized jugs of olive oil.

From Salon ● Sep. 20, 2026

For example, the tube-bunker was initially envisioned as a “completely dark space” twinkling with a variety of malfunctioning countdown clocks.

From Los Angeles Times ● Aug. 20, 2026

“Hi, I’m at the Speedway at Eighty-sixth and Ditch, and I need an ambulance. The great love of my life has a malfunctioning G-tube.”

From "The Fault in Our Stars" by John Green

Random Word

Spin the wheel and learn a new word!

Get a word


Vocabulary.com logo
by dictionary.com

Join 14,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training