ὑπερούσιος
From LSJ
πάντα χωρεῖ καὶ οὐδὲν μένει καὶ δὶς ἐς τὸν αὐτὸν ποταμὸν οὐκ ἂν ἐμβαίης → all things move and nothing remains still, and you cannot step twice into the same stream
English (LSJ)
ον,
A above Being, Them.Or.1.8b, Procl.Inst.115, Theol. Plat.3.21, Syrian. in Metaph.5.34. Adv. -ίως Procl.Inst.118,145, Eustr.in EN40.7.
German (Pape)
[Seite 1200] übersubstantiell, K. S.