rei

rei is a Latin form of res, meaning “thing, matter, affair; fact; property”. It is the genitive singular feminine noun or dative singular feminine noun.

Found 3,485 times in the Latin texts on Socratos.

Where it is used

Caesar, De Bello Gallico 1.14.7: Divico respondit: ita Helvetios a maioribus suis institutos esse uti obsides accipere, non dare, consuerint; eius rei populum Romanum esse testem. Hoc responso dato discessit.

Terence, Adelphi 1.2.95: Rei dare operam, ruri esse parcum ac sobrium?

Plautus, Menaechmi 2.1.234: hic annus sextust postquam ei reí operam damus.

All forms of res (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.