inertiae
inertiae is a Latin form of inertia, meaning “idleness, inactivity; lack of skill”. It is the genitive singular feminine noun.
Found 29 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 8.0.1: Coactus assiduis tuis vocibus, Balbe, cum cotidiana mea recusatio non difficultatis excusationem, sed inertiae videretur deprecationem habere, rem difficillimam suscepi.
All forms of inertia (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.