Antonyms of noun inessential

1 sense of inessential

Sense 1
inessential, nonessential -- (anything that is not essential; "they discarded all their inessentials")
       Antonym of essential (Sense 1)
      => necessity, essential, requirement, requisite, necessary -- (anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun inessential

1 sense of inessential

Sense 1
inessential, nonessential -- (anything that is not essential; "they discarded all their inessentials")
       => thing -- (a separate and self-contained entity)

Antonyms of adj inessential

2 senses of inessential

Sense 1
inessential (vs. essential), unessential -- (not basic or fundamental)

essential (vs. inessential) -- (basic and fundamental; "the essential feature")
        => basal, primary -- (of primary importance)
        => biogenic -- (essential for maintaining the fundamental life processes; "sleep and food and water are among the biogenic needs of the organism")
        => constituent (prenominal), constitutional, constitutive (prenominal), organic -- (constitutional in the structure of something (especially your physical makeup))
        => must (prenominal) -- (highly recommended; "a book that is must reading")
        => no-frills (prenominal) -- (characterized by the absence of inessential features; "he got a no-frills introduction to the job")
        => staple -- (necessary or important, especially regarding food or commodities; "wheat is a staple crop")
        => substantial, substantive -- (having a firm basis in reality and being therefore important, meaningful, or considerable; "substantial equivalents")
        => virtual (prenominal) -- (existing in essence or effect though not in actual fact; "a virtual dependence on charity"; "a virtual revolution"; "virtual reality")
        => vital, life-sustaining -- (performing an essential function in the living body; "vital organs"; "blood and other vital fluids"; "the loss of vital heat in shock"; "a vital spot"; "life-giving love and praise")

Sense 2
inessential -- (not absolutely necessary)

INDIRECT (VIA unnecessary) -> necessary -- (absolutely essential)

Similarity of adj inessential

2 senses of inessential

Sense 1
inessential (vs. essential), unessential -- (not basic or fundamental)
       => accessorial -- (nonessential but helpful; "accessorial services included sorting and packing")
       => adscititious -- (supplemental; not part of the real or essential nature of a thing; "adscititious vowels")
       => incidental, nonessential -- (not of prime or central importance; "nonessential to the integral meanings of poetry"- Pubs.MLA)
          Also See-> dispensable#1; expendable#1; extrinsic#1; secondary#1; unimportant#1; unnecessary#1, unneeded#1

Sense 2
inessential -- (not absolutely necessary)
       => unnecessary (vs. necessary), unneeded -- (not necessary)