aquai
aquai is a Latin form of aqua, meaning “water”. It is the genitive singular feminine noun.
Found 26 times in the Latin texts on Socratos.
Where it is used
Vergil, Aeneid 7.464: exsultantque aestu latices, furit intus aquaï
Lucretius, De Rerum Natura 1.283: montibus ex altis magnus decursus aquai
All forms of aqua (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.