ὕδατος

From LSJ

ἡδονὴ μὲν γὰρ ἁπάντων ἀλαζονίστατον → pleasure is the greatest of impostors, pleasure is the most shameless thing of all

Source

Greek Monotonic

ὕδᾰτος: γεν. του ὕδωρ.

Russian (Dvoretsky)

ὕδᾰτος: gen. к ὕδωρ.