fratris

fratris is a Latin form of frater, meaning “brother”. It is the genitive singular masculine noun.

Found 380 times in the Latin texts on Socratos.

Where it is used

Caesar, De Bello Gallico 1.19.2: His omnibus rebus unum repugnabat, quod Diviciaci fratris summum in populum Romanum studium, summum in se voluntatem, egregiam fidem, iustitiam, temperantiam cognoverat; nam ne eius supplicio Diviciaci animum offenderet verebatur.

Ovid, Amores 3.9.13: Fratris in Aeneae sic illum funere dicunt

Plautus, Stichus 3.1.432: tui frátris ancillam: eo condixi in symbolam

All forms of frater (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.