Compos mentis (4)
'compos mentis' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for sane that I've seen before include "Normal" , "Not mad" , "Reasonable" , "Mentally sound" , "Compos mentis" .)
'compos mentis' is the definition.
(synonyms)
This is the entire clue.