erroris
erroris is a Latin form of error, meaning “wandering; mistake, error; delusion”. It is the genitive singular masculine noun.
Found 80 times in the Latin texts on Socratos.
Where it is used
Cicero, Pro P. Sulla 40: … e ab omnibus ceteris cogitationibus ad unam salutem rei publicae convertistis, vos denique in tantis tenebris erroris et inscientiae clarissimum lumen menti meae praetulistis.
All forms of error (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.