(ת') חיוני, נחוץ, יסודי

adj. necessary, needed, fundamental, impossible to live without

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Noun
1. 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"
(synonym) necessity, requirement, requisite, necessary
(antonym) inessential, nonessential
(hypernym) thing
(hyponym) desideratum

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Adjective
1. absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"
(synonym) indispensable
(similar) necessary
2. basic and fundamental; "the essential feature"
(antonym) inessential, unessential
(similar) basal, basic, primary
(see-also) crucial, important
(attribute) essentiality, essentialness
3. of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence"
(synonym) all-important(a), all important(p), crucial, of the essence(p)
(similar) important, of import
4. being or relating to or containing the essence of a plant etc; "essential oil"
(pertainym) essence
5. applying to essential legal principles and rules of right; "substantive law"
(synonym) substantive
(classification) law, jurisprudence
6. absolutely required and not to be used up or sacrificed
(similar) unexpendable

n. essentialness, necessariness, indispensability, vitalness

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