Malfunction is a synonym of misoperate.
As verbs the difference between malfunction and misoperate
is that malfunction
is to function improperly while misoperate
is (usually|intransitive) to operate incorrectly.
As a noun malfunction
is faulty functioning.
failure to function
to function improperly
to fail to function
- She told him the machine was poorly built, but they both knew that she was the one who had malfunctioned .
(usually) To operate incorrectly.
* (operate incorrectly) malfunction, misbehave