Skip to main content
necessary

necessary

∞ 1.0
Needed and cannot be avoided
  • adjective
  • /ˈnɛsəˌsɛri/
: necesario
  • Reading is a necessary skill for success in school.
  • necessary skills
  • absolutely necessary
  • medically necessary

Well, yes, but if it were necessary, what would you do?

Autoplay Next

Examples

  • And we often forget that time off is necessary for peak creativity.

  • It is necessary to wear a helmet when riding a motorcycle for safety.

  • But from time to time it's really necessary to test yourself.

  • Black budget activities are absolutely necessary for the safety and security of our nation.

  • Will people have the skills necessary for these kinds of jobs?

  • The ceremony is necessary for you to take your place in the world.

  • Yet, President Obama says that success in Libya is necessary to protect global peace and security.

    Academic text (2011)
  • We tailored a few of the lectures and readings to provide the necessary theoretical background.

    Academic text (2011)
  • Thirteen of the participants had not earned the necessary credits to earn sophomore status.

    Academic text (2011)
  • All necessary equipment should be assembled and on hand, and any necessary pre-test checks performed.

    Academic text (2011)

Synonyms

needed
vsnecessary
924 1.0

Required for a particular purpose or to make something possible

is the general idea covering many such cases without extra detail
required
vsnecessary
  • Formal
438 1.4

Something a rule, law, or official says you must have

is broader and not limited to rules or formal demands
vital
vsnecessary
405 3.5

Necessary for life or for something to succeed

conveys need generally without life or survival emphasis
mandatory
vsnecessary
226 3.8

Law or rules say you must do it

covers general requirement without implying legal force
indispensable
vsnecessary
42 4.6

Needed so much you cannot do without it or them

expresses need without insisting it is absolutely irreplaceable
compulsory
vsnecessary
29 4.2

Required by law or rule

is the broader idea that something must be done without institutional rules
obligatory
vsnecessary
  • Formal
26 5.3

Required by law, rule, or authority

is the plain idea of being needed rather than a rule driven duty
requisite
vsnecessary
26 6.2

Needed for a particular purpose

is a broader idea meaning something must be present or unavoidable
needful
vsnecessary
  • Archaic
7 8.6

Required for a particular purpose

uses the neutral everyday sense rather than formal wording
prerequisite
vsnecessary
2 6.6

Needed before something else can happen

is the general requirement concept not limited to prior conditions
superessential
vsnecessary
7.4

Very important and needed for something to work or survive

is the basic sense of being required without extra intensity

Antonyms

271 1.6

More than is needed or wanted

90 3.3

Not required, so you can choose whether to have or use it

Idioms

To do whatever is needed to reach a goal, even if the actions are difficult or harmful

Compounds

necessary evil
  • Informal
16 5.4

A bad thing you must accept to get a better result

How Necessary

vital
405 3.5
essential
49 2.4
necessary
∞ 1.0
unnecessary
271 1.6

Surface Forms

necessary positive
necessarier comparative
necessariest superlative

Morphology

necessary = necessity (transparent) = necess + ary

Formed from the noun 'necessity' with the adjectival suffix '-ary', so the meaning 'pertaining to what is needed' is directly inferable.

Etymology

Necessary comes from an old Latin word that meant 'unavoidable' or 'needed', and it is tied to the simple English idea of need. So if something is necessary, it is required and cannot be left out.