| adjective | of no importance or relevance especially to a law case “an objection that is immaterial after the fact” |
| adjective | without material form or substance “an incorporeal spirit” |
| adjective | not consisting of matter “immaterial apparitions” |
| adjective | not pertinent to the matter under consideration “an issue extraneous to the debate” |
| adjective | (often followed by `to') lacking importance; not mattering one way or the other “whether you choose to do it or not is a matter that is quite immaterial (or indifferent)” |
| immateriality | noun | complete irrelevance requiring no further consideration |
| incorporeality | noun | the quality of not being physical; not consisting of matter |
| extraneousness | noun | unrelatedness by virtue of falling outside the matter at hand |
| indifference | noun | unbiased impartial unconcern |