dementiae
dementiae is a Latin form of dementia, meaning “madness, insanity”. It is the genitive singular feminine noun.
Found 50 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 4.13.2: expectare vero dum hostium copiae augerentur equitatus reverteretur summae dementiae esse iudicabat,
Seneca the Elder, Excerpta Controversiae 6.7: Dementiae sit actio. Qui habebat duos filios duxit uxorem. alter ex adolescentibus cum aegrotaret et in ultimis esset, …
All forms of dementia (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.