ETYM Pref. im- not + material: cf. French immatériel.
1. Lacking importance; not mattering one way or the other; often followed by; SYN. indifferent.
2. Not consisting of matter; SYN. nonmaterial.
3. Of no importance or relevance especially to a law case.

ETYM Pref. in- not + essential: cf. French inessentiel.
1. Not absolutely necessary.
2. Not basic or fundamental; SYN. unessential.

Having no bearing on or connection with the subject at issue.

ETYM Cf. French négligible, négligeable.
1. Not worth considering; SYN. paltry, trifling.
2. So small as to be meaningless; insignificant.

1. Not essential
2. Being a substance synthesized by the body in sufficient quantity to satisfy dietary needs

1. Not essential; not of prime importance; not indispensable; unimportant.
2. Void of essence, or real being.

Not important.