Synonyms of the word

nonmaterial

• adj. Not material; apart from matter.

immaterial

• adj. Having no matter or substance.
• adj. (law, accounting) So insubstantial as to be irrelevant.

insubstantial

• adj. Lacking substance; not real or strong.

intangible

• adj. incapable of being perceived by the senses; incorporeal.
• n. Anything intangible.
• n. (law) Incorporeal property that is saleable though not material, such as bank deposits, stocks, bonds,…

nonphysical

• adj. not physical; not using kinetic energy.
• adj. not having physical form; insubstantial.

unreal

• adj. fake; not real.
• adj. (slang) larger or more fantastic than typical of real life.

unsubstantial

• adj. (archaic) Alternative form of insubstantial.