"non compos mentis" (Latin)

by Craig Shrives

What does the Latin term non compos mentis mean?

"Non compos mentis" is a Latin phrase that can be translated as "not of sound mind" in English. It is a legal term used to describe a person who lacks the mental capacity or competence to understand their actions or make rational decisions. It is often invoked in legal proceedings, such as in cases of determining someone's ability to enter into contracts or to stand trial for a crime.

Examples in Sentences

Here are three example sentences:
  • The court declared the individual non compos mentis due to severe cognitive impairment, appointing a guardian to make decisions on their behalf.
  • The defense argued that the defendant was non compos mentis at the time of the crime, unable to comprehend the consequences of their actions.
  • In order to contest the will, it must be proven that the testator was non compos mentis or unduly influenced when making the provisions.
non compos mentis (meaning)

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