What does aquifuga mean in Latin?

aquifuga, a noun, means “a hydrophobe”.

What is the genitive of aquifuga?

The genitive singular is aquifugae. aquifuga is masculine, first declension.

In classical Latin, [aˈkʷɪ.fʊ.ɡa]; in ecclesiastical (church) Latin, [aˈkʷiː.fu.ɡa].

noun · masculinefirst declension

aquifuga m or f (genitive aquifugae)

Classical[aˈkʷɪ.fʊ.ɡa]Ecclesiastical[aˈkʷiː.fu.ɡa]

Late Latinfemininemasculinea hydrophobe
Αliī quoque phobodipson appellant[…]Polybus pheugydron[…]nōs dēnique aquifugam dīcere poterimus. Others use the name φοβόδιψος […] Polybus φεύγυδρος […] In Latin, therefore, we can say aquifuga.c. 400 CE, Caelius Aurelianus, Celerum passionum libri III 3.9:[http://www.mlat.uzh.ch/MLS/xfromcc.php?tabelle=Caelius_Aurelianus_cps16&rumpfid=Caelius_Aurelianus_cps16,%20Celerum%20passionum%20libri%20III,%20%20%20%20%20p6,%20%20%209&id=Caelius_Aurelianus_cps16,%20Celerum%20passionum%20libri%20III,%20%20%20%20%20p6,%20%20%209,%20%20%20%20%20%207&level=99&level9798=&satz=7&hilite_id=Caelius_Aurelianus_cps16,%20Celerum%20passionum%20libri%20III,%20%20%20%20%20p6,%20%20%209,%20%20%20%20%20%207 Gerhard Benz (ed.), Corpus medicorum latinorum VI 1: Caelii Aureliani celerum passionum libri III, tardarum passionum libri V, Berolini in Aedibus Academiae Scientiarum MCMXC [1990]]

ăquĭfŭga, ae, comm. aqua-fugio,

I. one fearful of water, med. t., one having hydrophobia, ὑδροφόβος, Cael. Aur. Acut. 3, 15.

From aqua (“water”) + fugiō (“to avoid”), a calque of Ancient Greek φεύγυδρος (pheúgudros), which is otherwise unattested.