dementalized
/ˌdiːˈmɛnt(ə)lʌɪzd/ /ˌdiːˈmɛntəlʌɪzd/(also dementalised)
adjective
Deprived of the capacity for thought; brutalized or dehumanized; having lost mental capacity or a mental quality.
Origin
Mid 19th century; earliest use found in Pennsylvania School Journal. From de- + mental + -ized.