sincera
sincera is a Latin form of sincerus, meaning “pure, clean, genuine; sincere”. It is the nominative singular feminine adjective.
Found 28 times in the Latin texts on Socratos.
Where it is used
Ovid, Metamorphoses 1.191: ense recidendum est, ne pars sincera trahatur.
All forms of sincerus (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.