immaterial
From LSJ
adj.
Not consisting of matter: ἀειδής (Plat.). Without body: P. ἀσώματος. 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.