Synonyms for Immateriality:

n.

immateriality (noun)
incorporeality, Ethereality, spirituality, abstraction, Imponderability, intangibility, unsubstantiality, imagination.
insignificance (noun)
nothingness.
irrelevance (noun)
insignificance.
unimportance (noun)
insignificance.
unsubstantiality (noun)
mirage, vacancy, spectre, cipher, nothingness, zero, Nihility, nullity, insignificance, apparition, vacuity, tenuousness, nonexistence, phantom, impalpability, unreality, emptiness.