immaterial
From LSJ
κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → fortune is common to all, the future is unknown | fortune is common to all and the future unknown | fate is common to all and the future unknown
κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → fortune is common to all, the future is unknown | fortune is common to all and the future unknown | fate is common to all and the future unknown
not consisting of matter: ἀειδής (Plato).
shadowy: P. σκιοειδής, ἀμυδρός, V. ἀμαυρός.
not necessary: P. and V. οὐκ ἀναγκαῖος.
secondary: P. ὕστερος; see secondary.
nothing to do with the subject: P. οὐδὲν πρὸς λόγον.