perniciem
perniciem is a Latin form of pernicies, meaning “destruction, ruin; bane”. It is the accusative singular feminine noun.
Found 177 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 1.20.3: quibus opibus ac nervis non solum ad minuendam gratiam, sed paene ad perniciem suam uteretur. Sese tamen et amore fraterno et existimatione vulgi commoveri.
All forms of pernicies (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.