mal·func·tion
ˌmal-ˈfəŋ(k)-shən 
malfunctioned; malfunctioning; malfunctions
: to function imperfectly or badly : fail to operate normally
plural malfunctions
: a failure to operate or function in the normal or correct manner : the action or an instance of malfunctioning
a hardware/equipment malfunction
Once thought to be a disease itself dropsy is now known to be a sign of several kinds of body malfunction, especially congestive heart failure and kidney disease.—
C. Clairborne Ray
C. Clairborne RayIn schizophrenia this filtering system malfunctions or short-circuits. This malfunction causes people to misevaluate what they see, hear, and experience in their environment.—Richard Crino
Richard Crino
Did you know?
A malfunctioning switch might keep us from turning on a light. A malfunctioning heart valve might require replacement with an artificial valve, and if your immune system malfunctions it may start to attack healthy cells. And a malfunction in a voting machine could result in hundreds of votes being miscounted.
Examples of malfunction in a Sentence
Verb
A software problem is causing the system to malfunction.
Recent Examples on the Web
Jordana Comiter, People.com, 13 Mar. 2025
Industry veterans say other companies commonly provide temporary replacements while a patient with a malfunctioning device waits for a repair or a new, permanent one to arrive.
—Peter Elkind, ProPublica, 10 Mar. 2025
Stephen Clark, Ars Technica, 14 Mar. 2025
Martinelli had nine points in the first half. Martinelli, who had a jersey malfunction early and wore No. 66 rather than No. 2 for much of the game, finished Thursday with 22 points on 7-for-14 shooting.
—Colleen Kane, Chicago Tribune, 13 Mar. 2025
See All Example Sentences for malfunction
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Verb
If the series mirrors the comic, Eve's malfunctioning powers in the end could hint at her future pregnancy.
—Jordana Comiter, People.com, 13 Mar. 2025
Industry veterans say other companies commonly provide temporary replacements while a patient with a malfunctioning device waits for a repair or a new, permanent one to arrive.
—Peter Elkind, ProPublica, 10 Mar. 2025
Noun
The rocket continued its climb into space, but ULA and Northrop Grumman, which supplies solid rocket motors for Vulcan, set up an investigation to find the cause of the nozzle malfunction.
—Stephen Clark, Ars Technica, 14 Mar. 2025
Martinelli had nine points in the first half. Martinelli, who had a jersey malfunction early and wore No. 66 rather than No. 2 for much of the game, finished Thursday with 22 points on 7-for-14 shooting.
—Colleen Kane, Chicago Tribune, 13 Mar. 2025
See All Example Sentences for malfunction
Cite this Entry
“Malfunction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/malfunction. Accessed 24 Mar. 2025.
Copy CitationKids Definition
malfunction
verb
mal·func·tion
(ˈ)mal-ˈfəŋ(k)-shən
: to fail to function or operate properly
malfunction
noun
Medical Definition
malfunction
intransitive verb
mal·func·tion
(ˈ)mal-ˈfəŋ(k)-shən
: to function imperfectly or badly : fail to operate in the normal or usual manner
malfunctioning kidneys
malfunction
noun
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