Synonyms: immaterial, nonmaterial
Definition: not consisting of matter
Usage: immaterial apparitions; ghosts and other immaterial entities
Similar words: nonphysical, intangible
Definition: lacking substance or reality; incapable of being touched or seen
Usage: that intangible thing--the soul
Synonyms: immaterial, incorporeal
Definition: without material form or substance
Usage: an incorporeal spirit
Similar words: discorporate, disembodied, unbodied, unembodied, bodiless
Definition: not having a material body
Usage: bodiless ghosts
Similar words: spiritual
Definition: lacking material body or form or substance
Usage: spiritual beings; the vital transcendental soul belonging to the spiritual realm-Lewis Mumford
Synonyms: immaterial, indifferent
Definition: (often followed by `to') lacking importance; not mattering one way or the other
Usage: 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
Similar words: unimportant
Definition: not important
Usage: a relatively unimportant feature of the system; the question seems unimportant
Synonyms: orthogonal, extraneous, immaterial, impertinent
Definition: not pertinent to the matter under consideration
Usage: an issue extraneous to the debate; the price was immaterial; mentioned several impertinent facts before finally coming to the point
Similar words: irrelevant
Definition: having no bearing on or connection with the subject at issue
Usage: an irrelevant comment; irrelevant allegations