Adjective
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(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)"
"what others think is altogether indifferent to him"
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not pertinent to the matter under consideration
"an issue extraneous to the debate"
"the price was immaterial"
"mentioned several impertinent facts before finally coming to the point"
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not consisting of matter
"immaterial apparitions"
"ghosts and other immaterial entities"
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without material form or substance
"an incorporeal spirit"
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of no importance or relevance especially to a law case
"an objection that is immaterial after the fact"