Synonyms of the word

nonessential

• adj. Not required; not essential.
• n. Something that is not essential.

incidental

• adj. Loosely associated; existing as a byproduct, tangent, or accident; being a likely consequence.
• adj. Occurring by chance.
• adj. (physics, of radiation) Entering or approaching, prior to reflection (more frequently incident).
• n. Minor items, not further defined. Incidental expense.
• n. Something that is incidental.

inessential

• adj. Not essential.
• adj. Lacking essence or being.
• n. (often in plural) Something that is not essential.

thing

• n. That which is considered to exist as a separate entity, object, quality or concept.
• n. A word, symbol, sign, or other referent that can be used to refer to any entity.
• n. An individual object or distinct entity.
• n. (informal) Something that is normal or generally recognised.
• n. (law).
• n. (somewhat dated) The latest fad or fashion.
• n. (in the plural) Clothes, possessions or equipment.
• n. (informal) A unit or container, usually containing edible goods.
• n. (informal) A problem, dilemma, or complicating factor.
• n. (slang) A penis.
• n. A living being or creature.
• n. That which matters; the crux.
• n. Used after a noun to refer dismissively to the situation surrounding the noun's referent.
• n. (informal) That which is favoured; personal preference. (Used in possessive constructions.).
• n. (chiefly historical) A public assembly or judicial council in a Germanic country.
• v. (rare) To express as a thing; to reify.

unessential

• adj. Not essential; unimportant.
• adj. Void of essence, or real being.