English Reference

Word

malfunction

Phoneticsmal·func·tion, stress on the second syllable

US/mæɫˈfəŋkʃən/

UK/mˌælfˈʌŋkʃən/

Countable & uncountable

Definition

n. a failure to work correctly. You use this when a machine or a system stops doing what it is supposed to do.

n. a failure to function in a normal or satisfactory manner. Often used in technical or formal contexts to describe mechanical or electronic errors.

Examples

“The computer crashed due to a sudden hardware malfunction.”

“A minor technical malfunction in the cooling system caused the entire factory to shut down for two hours.”

“Engineers traced the catastrophic failure to a software malfunction that occurred during the high-pressure phase of the launch sequence.”

Examples

simple

“The computer crashed due to a sudden hardware malfunction.”

contextual

“A minor technical malfunction in the cooling system caused the entire factory to shut down for two hours.”

complex

“Engineers traced the catastrophic failure to a software malfunction that occurred during the high-pressure phase of the launch sequence.”

Usage

Often used as a countable noun for specific events, but can be uncountable when referring to the general state of failing to work.

Real-World Examples

“A safety system detected dangerous levels of engine thrust, assumed a malfunction, and ordered the fuel supply to be cut off, the theory goes.”
BBC News 10 Jun 2026
“If you’re asked to leave because of malfunctioning machines, don’t.”
The Conversation 1 Sept 2026

Etymology

From mal- (“bad, incorrect”) + function.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Idioms

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

QR code

englishreference.com/q/malfunction

English Reference