immaterial

adjective

1. of no importance or relevance especially to a law case"an objection that is immaterial after the fact"
2. without material form or substance"an incorporeal spirit"
3. not consisting of matter"immaterial apparitions"
4. not pertinent to the matter under consideration"an issue extraneous to the debate"
5. (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)"