Dementia

·noun Insanity; madness; ·esp. that form which consists in weakness or total loss of thought and reason; mental imbecility; idiocy.

dementia
dēmentĭa, ae, f [demens], the being out of one's mind; insanity, madness; folly (freq. and class.; ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
dementia
dēmentia ae, f demens, insanity, madness, distraction, folly : ut est Dementia, so mad is he , T....

An Elementary Latin Dictionary