To be mentally healthy and sound, is to be sane!
Sune
Sung
sane
The best word to use to describe someone who is mentally healthy and sound is stable. This means that they are sane and sensible and not likely to fail.
The word would be sane.
That would be "sane".
The answer is sane
Sane means mentally healthy or sound.It comes from the Latin word sanus, and came into common use around 1721. At one time, it was also used to describe a healthy body, but now almost exclusively refers to the mind.
Pane
Mentally and physically.
A mentally healthy person is safe
She is a busy mom of 8, very normal and healthy and is of sound mind ... and body