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Definition automatism in British English

automatism noun

[uncountable] noun
/ɔːˈtɒmətɪz(ə)m/
1

a defence used in criminal cases where the accused's mental state leads them to commit a crime without knowing they are doing it. Insane automatism is when a person is mentally ill and commits the crime. Non-insane automatism is when the accused was temporarily affected, for example while sleepwalking or suffering from a fit or concussion.

Example

A successful plea of automatism will result in a full acquittal.

Synonyms and related words
Definition automatism in British English