non compos mentis
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
Not of sound mind, and therefore not legally responsible.
The court found him non compos mentis at the time of the killing and ordered hospital treatment.
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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