be of unsound mind

To have impaired or dysfunctional thought, memory, and/or cognitive understanding; unable to think and/or understand for oneself. My poor grandfather has been of unsound mind ever since he suffered that stroke last year.

Common Names:

Name	Pronounced	Usage
Lilibeth	-	English
Dharma	-	Indian, Hindi, Telugu, Nepali
Lewis	['lu:is]
Hyatt	['haiət]
Narendra	-	Indian, Hindi, Marathi, Gujarati, Telugu
Weston	WES-tən	English