Immaterial, a.
Etymology: [Pref. im- not + material: cf. F. immatériel.]
1. Not consisting of matter; incorporeal; spiritual; disembodied. Angels are spirits immaterial and intellectual. Hooker.
2. Of no substantial consequence; without weight or significance; unimportant; as, it is wholly immaterial whether he does so or not.
Syn. -- Unimportant; inconsequential; insignificant; inconsiderable; trifling.
Shades of meaning
Fernald lists immaterial only as an antonym, under physical.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given