What does malfunction mean?
A malfunction is a failure in the normal or proper working of a machine, system, process, or organism. As a noun, it names the failure itself: a device may suffer a malfunction, or a malfunction may interrupt production, communication, or transport. As a verb, malfunction describes something failing to operate as intended, as in “the camera malfunctioned during the storm.” The word is commonly associated with mechanical and technical problems, but it is also used more broadly for faults in software, organizational procedures, and biological functions. Unlike a simple “breakdown,” malfunction often suggests that something continues to exist or function imperfectly rather than becoming completely unusable. It is a useful term because it identifies a departure from expected operation without requiring the reader to know the specific technical cause.
A failure of a machine, system, process, or organism to operate normally or as intended.
"Investigators identified a malfunction in the aircraft's navigation system."
Often used in technical, mechanical, electronic, and scientific contexts, but also applicable more broadly.
To fail to operate normally, correctly, or as intended.
"The printer began malfunctioning shortly after the software update."
The verb is intransitive and describes the failure of a person, device, system, or process to work properly.
The plural is used for separate instances or occurrences of faulty or abnormal operation.
"The technician documented three malfunctions before replacing the control board."
A malfunction is a reminder that even the most reliable systems can fail at the one moment their performance matters most.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does malfunction come from?
Malfunction was formed in the early 19th century from the prefix mal-, meaning “bad” or “abnormal,” and function. Its sense developed from the idea of abnormal or faulty functioning into the more specific modern meaning of a failure in operation. The word belongs to a wider family based on Latin functio, a “performance” or “execution,” which also underlies function, functional, and functionality.
Related word forms
How malfunction is actually used
The word is used in both technical and general contexts. It is often more formal than “breakdown” and generally implies failure to operate as intended, although it can also refer to an abnormal biological or physiological process.
Easily confused with malfunction
A malfunction usually refers to a specific failure in operation, while dysfunction can describe an impaired or abnormal functioning more generally.