(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:
Fairly large in amount or quantity:
Calling for immediate attention; urgent
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:
(Gram.) Designating or of the mood of a verb that expresses a command, strong request, or exhortation
Convenient but based on a concern for self-interest rather than principle:
The definition of indispensable is essential or absolutely necessary.
Incapable of being dispensed with
The definition of needful is something that is required.
Required beforehand, esp. as a necessary condition for something following
Not important; insignificant or petty.
Something that nourishes; food.
The definition of requisite is something required or necessary.
Relating to what is basic; radical
Of the greatest importance; crucial.
That cannot be avoided; inevitable
The definition of elementary is something simple and basic, or the entry-level into something.
Highest, as in rank or office; foremost
Firmly in position; stationary:
Existing as an essential constituent or characteristic; intrinsic:
Firmly fixed or established
That cannot be denied; indisputable
Having or suggesting a consciousness of high position or authority; authoritative:
Named but not known or previously mentioned:
The definition of inevitable is something that is certain to happen.
Required by fashion; fashionable
Possessing everything essential; entire.
Pressing needs; demands; requirements
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.
Imposing or commanding adherence to a commitment, an obligation, or a duty:
Vital to the resolution of a crisis or the determination of an outcome:
Assured is defined as something that is definite.
Void of essence, or real being.
The definition of insignificant is someone or something that is small, lacking in power, or otherwise not important.
Likely to happen without delay; impending; often, specif., threatening, looming, etc.
Possible, but not certain to happen.
Incapable of being dispensed with
Something considered necessary or highly desirable.
Essential quality, fact, or thing
The state or fact of being in need.
(Philos.) The status of something that exists in itself as an individual whole
Not essential; of relatively no importance; unnecessary
The definition of unnecessary is not needed.
That can be dispensed with; not important
Not essential; unessential.
Having no purpose or reason; pointless; to no avail:
(Bot.) Borne at the apex of the support, as an anther
Of, or having the nature of, a statute or statutes
The definition of principal is the first or highest in importance.
The definition of constant is something that doesn't change or something that continues or remains steady.
(Law) Without legal obligation or consideration:
Find another word for necessary. In this page you can discover 106 synonyms, antonyms, idiomatic expressions, and related words for necessary, like: essential, required, urgent, significant, pressing, mandatory, basic, paramount, imperative, nuts-and-bolts and compulsory.