1. (a.) Of no substantial consequence; irrelevant; unimportant; as, an immaterial fact\.

2. (a.) Not consisting of matter; incorporeal; spiritual; disembodied.

adrift aerial airy apparitional asomatous astral back-burner beside the mark beside the point beside the question bodiless celestial decarnate decarnated dinky discarnate disembodied dispensable ephemeral ethereal evanescent extramundane extraneous extrinsic fanciful flimsy foreign ghostly heavenly illusory imaginary impalpable impertinent imponderable inadmissible inapplicable inapposite inappreciable inappropriate incidental inconsequent inconsequential inconsiderable incorporate incorporeal inessential inferior insensible insignificant insubstantial intangible irrelative irrelevant light little merely nominal metaphysical minor minute negligible nihil ad rem nonessential nonmaterial nonphysical nonsubstantial not at issue not real not vital nugatory occult off the subject otherworldly out-of-the-way parenthetical petit petty phantom psychic shadowy slight small spiritual subjective supernatural technical transmundane trifling trivial unactual unconcrete unearthly unembodied unessential unextended unfleshly unimportant unimpressive unnoteworthy unphysical unreal unrealistic unsolid unsubstanced unsubstantial unworldly weightless