unessential

Synonyms:

inessential

dispensable

capable of being dispensed with or done without

expendable

suitable to be expended

unimportant

not important

extrinsic

not forming an essential part of a thing or arising or originating from the outside

unnecessary, unneeded

not necessary

secondary

being of second rank or importance or value; not direct or immediate

accessorial

nonessential but helpful

adscititious

supplemental; not part of the real or essential nature of a thing

incidental, nonessential

not of prime or central importance

Antonyms:

essential

basic and fundamental

crucial, important

of extreme importance; vital to the resolution of a crisis

indispensable

not to be dispensed with; essential

unexpendable

not suitable to be expended

of import

of great significance or value

intrinsic, intrinsical

belonging to a thing by its very nature

necessary

absolutely essential

primary

of first rank or importance or value; direct and immediate rather than secondary

basal

of primary importance

biogenic

essential for maintaining the fundamental life processes

constituent, constitutional, constitutive, organic

constitutional in the structure of something (especially your physical makeup)

must

highly recommended

no-frills

characterized by the absence of inessential features

staple

necessary or important, especially regarding food or commodities

substantial, substantive

having a firm basis in reality and being therefore important, meaningful, or considerable

virtual

existing in essence or effect though not in actual fact

life-sustaining, vital

performing an essential function in the living body

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