Necessary synonyms | Best 106 synonyms for necessary

essential

(Biochemistry) Being a substance that is required for normal functioning but cannot be synthesized by the body and therefore must be included in the diet:

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required

Obligatory:

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urgent

Conveying a sense of pressing importance:

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significant

Fairly large in amount or quantity:

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pressing

Calling for immediate attention; urgent

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mandatory

Required or commanded by authority; obligatory:

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basic

The definition of basic is something that is essential, or something with a pH level higher than 7.

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paramount

Highest in rank, power, or authority:

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imperative

(Gram.) Designating or of the mood of a verb that expresses a command, strong request, or exhortation

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nuts-and-bolts

Essential

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compulsory

Obligatory; required:

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expedient

Convenient but based on a concern for self-interest rather than principle:

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indispensable

The definition of indispensable is essential or absolutely necessary.

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without choice

Essential

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perforce

Incapable of being dispensed with

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needful

The definition of needful is something that is required.

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needed

Necessary; being needed.

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prerequisite

Required beforehand, esp. as a necessary condition for something following

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vital

Necessary to continued existence.

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cardinal

Describing a "natural" number used to indicate quantity (e.g., one, two, three), as opposed to an ordinal number indicating relative position.

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obligatory

Imposing obligation, morally or legally; binding: an obligatory promise.

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incumbent on

Essential

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unimportant (antonym)

Not important; insignificant or petty.

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aliment

Something that nourishes; food.

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be necessary (related)

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requisite

The definition of requisite is something required or necessary.

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fundamental

Relating to what is basic; radical

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unpreventable

Not preventable.

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incumbent upon

Essential

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momentous

Outstanding in importance, of great consequence.

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compelling

Drivingly forceful:

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all-important

Of the greatest importance; crucial.

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specified

Thoroughly explained; adequately commented.

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unavoidable

That cannot be avoided; inevitable

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elementary

The definition of elementary is something simple and basic, or the entry-level into something.

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quintessential

Of the nature of a quintessence (in all senses); ultimate.

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chief

Highest, as in rank or office; foremost

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prime

First in excellence, quality, or value.

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fixed

Firmly in position; stationary:

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inherent

Existing as an essential constituent or characteristic; intrinsic:

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ingrained

Firmly fixed or established

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undeniable

That cannot be denied; indisputable

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important (related)

Having or suggesting a consciousness of high position or authority; authoritative:

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certain (related)

Named but not known or previously mentioned:

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inevitable (related)

The definition of inevitable is something that is certain to happen.

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de rigueur

Required by fashion; fashionable

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incumbent

Imposed on someone as an obligation, especially due to one's office.

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integral

Possessing everything essential; entire.

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exigency

Pressing needs; demands; requirements

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indispensability

The characteristic of being indispensable.

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need

A condition of poverty or misfortune:

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requirement

(Engineering) A statement (in domain specific terms) which specifies a verifiable constraint on an implementation that it shall undeniably meet or (a) be deemed unacceptable, or (b) result in implementation failure, or (c) result in system failure.

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sine qua non

An essential or indispensable element, condition, or ingredient.

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discretional (antonym)

Discretionary

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require (related)

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wanted

Wished for; desired; sought

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exigent

Demanding; needing great effort.

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binding

Imposing or commanding adherence to a commitment, an obligation, or a duty:

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decisive

Marked by promptness and decision.

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crucial

Vital to the resolution of a crisis or the determination of an outcome:

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intrinsic

Innate, inherent, inseparable from the thing itself, essential.

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permanent

Lasting for an indefinitely long time.

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determinate

Conclusive; decisive; positive

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assured

Assured is defined as something that is definite.

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unessential (antonym)

Void of essence, or real being.

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insignificant (antonym)

The definition of insignificant is someone or something that is small, lacking in power, or otherwise not important.

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imminent (related)

Likely to happen without delay; impending; often, specif., threatening, looming, etc.

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alimental

Supplying food; nourishing.

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contingent

Possible, but not certain to happen.

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indispensableinevitable

Incapable of being dispensed with

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inexorable

Impossible to stop or prevent; inevitable

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desideratum

Something considered necessary or highly desirable.

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essentiality

Essential quality, fact, or thing

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necessity

The state or fact of being in need.

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obligation

A binding, formal arrangement or an agreement to a liability to pay a specified amount or to do a certain thing for a person or group of persons. See also duty and liability.

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subsistence

(Philos.) The status of something that exists in itself as an individual whole

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behove

To suit; to befit.

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entail

To imply or require.

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casual (antonym)

Coming without regularity; occasional or incidental.

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needless (antonym)

Not needed; unnecessary.

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nonessential (antonym)

Not essential; of relatively no importance; unnecessary

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optional (antonym)

Not compulsory; left to personal choice; elective.

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unnecessary (antonym)

The definition of unnecessary is not needed.

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dispensable (antonym)

That can be dispensed with; not important

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inessential (antonym)

Not essential; unessential.

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useless (antonym)

Having no purpose or reason; pointless; to no avail:

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possible (related)

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not possible (related)

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neccessary (related)

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innate

(Bot.) Borne at the apex of the support, as an anther

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necessary (related)

Logically inevitable:

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appropriate (related)

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feasible (related)

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practicable (related)

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advisable (related)

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desirable (related)

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acceptable (related)

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sufficient (related)

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adequate (related)

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applicable (related)

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impossible (related)

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statutory

Of, or having the nature of, a statute or statutes

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principal

The definition of principal is the first or highest in importance.

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constant

The definition of constant is something that doesn't change or something that continues or remains steady.

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without appeal

Essential

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voluntary (antonym)

(Law) Without legal obligation or consideration:

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Necessary synonyms and antonyms

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Necessary synonyms and antonyms

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Necessary Sentence Examples

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