Mentally rational (4)
I believe the answer is:
sane
(Other definitions for sane that I've seen before include "Compos mentis" , "Reasonable" , "Rationable, sensible" , "Mentally sound" , "Free from mental disorder" .)
I believe the answer is:
sane
(Other definitions for sane that I've seen before include "Compos mentis" , "Reasonable" , "Rationable, sensible" , "Mentally sound" , "Free from mental disorder" .)