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
Ciar	KEER, KEE-ar	Irish
ÁFrica	-	Spanish
Friedrich	FREED-rikh	German
GaËL	-	French, Breton
Estera	-	Polish, Slovak, Lithuanian
Shereen	-	Persian