Definition of "Immaterial" :
adjective: not consisting of matter
adjective: without material form or substance
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)."
adjective: of no importance or relevance especially to a law case
"An objection that is immaterial after the fact."
adjective: not pertinent to the matter under consideration
"The price was immaterial."