essential

adjective

  1. 1

    defining rights and duties as opposed to giving the rules by which rights and duties are established

    substantive law

  2. 2

    basic and fundamental

    the essential feature

  3. 3

    of the greatest importance

    the all-important subject of disarmament

    crucial information

  4. 4

    absolutely necessary; vitally necessary

    essential tools and materials

    funds essential to the completion of the project

  5. 5

    being or relating to or containing the essence of a plant etc

    essential oil

noun

  1. 1

    anything indispensable

    food and shelter are necessities of life

    the essentials of the good life

Synonyms

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