usui
usui is a Latin form of usus, meaning “use, practice, experience”. It is the dative singular masculine noun.
Found 146 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 1.38.1: … essisse]. Id ne accideret, magnopere sibi praecavendum Caesar existimabat. Namque omnium rerum quae ad bellum usui erant summa erat in eo oppido facultas,
Plautus, Cistellaria 4.2.691: quaé neque illa ílli quicquam úsui et mi exítio est.
Plautus, Pseudolus 4.7.1129: popló strenuí, mi improbí usuí sunt.
All forms of usus (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.