Part of speech:
(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:
Conveying a sense of pressing importance:
(Gram.) Designating or of the mood of a verb that expresses a command, strong request, or exhortation
Calling for immediate attention; urgent
The definition of requisite is something required or necessary.
Convenient but based on a concern for self-interest rather than principle:
The definition of needful is something that is required.
The definition of indispensable is essential or absolutely necessary.
Relating to what is basic; radical
Fairly large in amount or quantity:
Required or commanded by authority; obligatory:
The definition of basic is something that is essential, or something with a pH level higher than 7.
Highest in rank, power, or authority:
Incapable of being dispensed with
Something that nourishes; food.
Required beforehand, esp. as a necessary condition for something following
Of the greatest importance; crucial.
That cannot be avoided; inevitable
Vital to the resolution of a crisis or the determination of an outcome:
The definition of elementary is something simple and basic, or the entry-level into something.
Highest, as in rank or office; foremost
The definition of principal is the first or highest in importance.
Firmly in position; stationary:
The definition of constant is something that doesn't change or something that continues or remains steady.
Existing as an essential constituent or characteristic; intrinsic:
Firmly fixed or established
That cannot be denied; indisputable
Assured is defined as something that is definite.
Not important; insignificant or petty.
Void of essence, or real being.
The definition of insignificant is someone or something that is small, lacking in power, or otherwise not important.
Having or suggesting a consciousness of high position or authority; authoritative:
Named but not known or previously mentioned:
Likely to happen without delay; impending; often, specif., threatening, looming, etc.
The definition of inevitable is something that is certain to happen.
Possible, but not certain to happen.
Required by fashion; fashionable
Incapable of being dispensed with
Possessing everything essential; entire.
Something considered necessary or highly desirable.
Essential quality, fact, or thing
Pressing needs; demands; requirements
The state or fact of being in need.
A condition of poverty or misfortune:
(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.
(Philos.) The status of something that exists in itself as an individual whole
Being a substance that is required for normal functioning but does not need to be included in the diet because of the body's ability to synthesize it from other nutrients:
The definition of optional is available, but not required.
Not essential; unessential.
(Law) Without legal obligation or consideration:
Capable of happening, existing, or being true without contradicting proven facts, laws, or circumstances:
Imposing or commanding adherence to a commitment, an obligation, or a duty:
(Bot.) Borne at the apex of the support, as an anther
Of, or having the nature of, a statute or statutes
Find another word for necessary. In this page you can discover 92 synonyms, antonyms, idiomatic expressions, and related words for necessary, like: essential, required, urgent, imperative, pressing, compulsory, requisite, wanted, expedient, needful and indispensable.