Essential synonyms and antonyms

ĭ-sĕn'shəl

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Part of speech:

Obligatory:
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Logically inevitable:
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Necessary to the continuation of life; life-sustaining:
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The definition of a requirement is something that is necessary.
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Of, being, or serving as a starting point or basis:
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The definition of underlying refers to something lying beneath, or the basic or root cause of something.
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A leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra.
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The definition of peripheral is something that is just outside of the main focus.
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Of, relating to, or constituting the basic, essential, or fundamental part:
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Not derived from something else; primary or basic:
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Constituting or forming part of the essence of something
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(Music) Relating to or being a minor scale.
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Something substantive
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Of, or relating to a subsidy
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The definition of optional is available, but not required.
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Anything designed or intended to be discarded after use; specif., a leaflet or handbill
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Miscellaneous facts, especially when the subject of questions in games and quizzes.
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A requirement which must be satisfied before taking a course of action.
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Acting in a subsidiary, or subordinate, capacity
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(Archaic) The most valuable or main part of anything
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(Bot.) key fruit
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Without which not. Something that is indispensable and upon which something else relies.
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Of the nature of a quintessence (in all senses); ultimate.
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The definition of imperative is something that has authority or is absolutely necessary.
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A fundamental element, principle, or skill, as of a field of learning:
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Not essential; unessential.
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Being essential or decisive for determining the outcome or future of something; extremely important.
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A part of a set or configuration, as a side of a triangle or a number in a matrix
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That forms a constituent part of something else
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Not essential; of relatively no importance; unnecessary
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Relating to a legal or political constitution.
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Necessary for completeness; essential
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The grade stating this requirement
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Great or imperative need
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Possessing some quality, or having been subject to some operation (as substitution), in the second degree; as, a secondary salt, a secondary amine, etc. Compare primary.
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Not important; insignificant or petty.
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(Geol.) Occurring in minor amounts in a specified rock; nonessential
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Something that is mandatory or required
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Something that must be gained in order to gain something else
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The definition of indispensable is essential or absolutely necessary.
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Requisite is something that is necessary or required to achieve some goal or do some task.
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Being an essential or basic part or parts
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(Countable and uncountable) A requirement for something.
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(Grammar) Adjectival; pertaining to or functioning as an adjective.
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Relating to or occurring on or near the surface of the earth.
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The first in a group or series.
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Utmost; extreme:
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The definition of needful is something that is required.
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A role:
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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
Find another word for essential. In this page you can discover 61 synonyms, antonyms, idiomatic expressions, and related words for essential, like: required, necessary, vital, requirement, basic, underlying, fundamental, peripheral, elementary, primitive and be.