Meaning & use
compos mentis
Having full control of one's mind; sane and capable of rational thought and decision-making.
See it in a sentence
The lawyer confirmed that the elderly client was fully compos mentis when she signed the will.
He seemed barely compos mentis after being woken suddenly in the middle of the night.
A note on using this word
Compos mentis is a Latin legal phrase, used especially to confirm that a person was mentally competent when making a decision such as signing a will.
Words with a similar meaning
sanelucid
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
non compos mentis
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