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insanity

noun/ɪnˈsænɪti/

A2CEFR level
18/100Rarity: common
TechnicalRegister

A defence that the accused, through mental disorder, did not know the nature or wrongfulness of the act.

The plea of insanity turned on whether he understood that strangling the victim was wrong.

Topic: Criminal law in Legal English

Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.

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More law words: Criminal law