malfunction

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.

Definitions of malfunction
1

v fail to function or function improperly

“the coffee maker malfunctioned
Synonyms:
misfunction
Antonyms:
function, go, operate, run, work
perform as expected when applied
run
be operating, running or functioning
work
operate in or through
show more antonyms...
Types:
jam
get stuck and immobilized
Type of:
break, break down, conk out, die, fail, give out, give way, go, go bad
stop operating or functioning

n a failure to function normally

Types:
blowout
a sudden malfunction of a part or apparatus
stall
a malfunction in the flight of an aircraft in which there is a sudden loss of lift that results in a downward plunge
Type of:
failure
an event that does not accomplish its intended purpose

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