Definition of compos mentis in English:

compos mentis

Syllabification: com·pos men·tis
Pronunciation: /ˌkämpəs ˈmentəs
 
/

adjective

[predic.]
Having full control of one’s mind; sane: are you sure he was totally compos mentis?
More example sentences
  • Even though anyone still living who saw them play is probably not adequately compos mentis to remember the occasion.

Origin

early 17th century: Latin.

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