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Another word for essential

a-z
Adjective
  1. Constituting or forming part of the essence of something

      1. Of, relating to, or characteristic of life:
      2. Necessary to the continuation of life; life-sustaining:
      3. Used or done on a living cell or tissue:
      1. Essential or necessary for completeness; constituent:
      2. Possessing everything essential; entire.
      3. Expressed or expressible as or in terms of integers.
      1. Of or relating to the foundation or base; elementary:
      2. Forming or serving as an essential component of a system or structure; central:
      3. Of great significance or entailing major change:
      1. Making a thing what it is; essential.
      2. Having power to institute, establish, or enact.
      3. Of or relating to the synthesis of a protein or an enzyme at a constant rate regardless of physiological demand or the concentration of a substrate.
      1. Of or relating to a constitution:
      2. Consistent with, sanctioned by, or permissible according to a constitution:
      3. Established by or operating under a constitution:
      1. Of, relating to, or forming a base; fundamental:
      2. Of, being, or serving as a starting point or basis:
      3. Of or relating to a base.
  2. Of or being an irreducible element

      1. Lying under or beneath something:
      2. Basic; fundamental:
      3. Present but not readily noticeable:
      1. Being last in a series, process, or progression:
      2. Eventual:
      3. Fundamental; elemental:
      1. Of or relating to an early or original stage or state; primeval:
      2. Occurring in or characteristic of an early stage of development or evolution:
      3. Having developed early in the evolutionary history of a group:
      1. Of or relating to the foundation or base; elementary:
      2. Forming or serving as an essential component of a system or structure; central:
      3. Of great significance or entailing major change:
      1. Of, relating to, or constituting the basic, essential, or fundamental part:
      2. Of, relating to, or involving the fundamental or simplest aspects of a subject:
      3. Of or relating to an elementary school or elementary education:
      1. Of, relating to, or being an element.
      2. Fundamental or essential; basic.
      3. Of or relating to fundamentals; elementary.
      1. Of, relating to, or forming a base; fundamental:
      2. Of, being, or serving as a starting point or basis:
      3. Of or relating to a base.
    See also:

    surface

  3. Incapable of being dispensed with

Noun
  1. A fundamental irreducible constituent of a whole

      1. A fundamental element, principle, or skill, as of a field of learning:
      2. Something in an incipient or undeveloped form:
      3. An imperfectly or incompletely developed organ or part.
      1. Of or relating to the foundation or base; elementary:
      2. Forming or serving as an essential component of a system or structure; central:
      3. Of great significance or entailing major change:
      1. A fundamental, essential, or irreducible constituent of a composite entity.
      2. The basic assumptions or principles of a subject.
      3. A member of a set.
      1. Of, relating to, or forming a base; fundamental:
      2. Of, being, or serving as a starting point or basis:
      3. Of or relating to a base.
    See also:

    part

  2. Something indispensable

    See also:

    necessary

Another word for essential

Modifier
  1. Absolutely necessary

  2. Rooted in the basis or essence

Synonym Study

  • Necessary implies a pressing need but does not always connote absolute indispensability
  • Requisite is applied to that which is required by the circumstances or for the purpose and generally suggests a requirement that is imposed externally rather than an inherent need the requisite experience for a position
  • An indispensable person or thing cannot be done without if the specified or implied purpose is to be achieved her diagnostic skills proved indispensable to the clinic
  • Essential , in strict usage, is applicable to that which constitutes the absolute essence or the fundamental nature of a thing and therefore must be present for the thing to exist, function, etc. food is essential to life