non compos mentis definition, meaning - what is non compos mentis in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “non compos mentis”

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non compos mentis

adjective [after verb] uk   /ˌnɒnˌkɒm.pəsˈmen.tɪs/  us   /ˌnɑːnˌkɑːm.poʊsˈmen-/
Someone who is non compos mentis is unable to think clearly, especially because of mental illness, and therefore not responsible for their actions.
(Definition of non compos mentis from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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