necessary
Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia.
Related to necessary: Necessary and sufficient
nec·es·sar·y
(nĕs′ĭ-sĕr′ē)adj.
1. Needed or required: a contract complete with the necessary signatures; conditions necessary to life. See Synonyms at indispensable.
2.
a. Unavoidably determined by prior conditions or circumstances; inevitable: the necessary results of overindulgence.
b. Logically inevitable: a necessary conclusion.
3. Required by obligation, compulsion, or convention: made the necessary apologies.
n. pl. nec·es·sar·ies
Something indispensable.
[Middle English necessarie, from Old French necessaire, from Latin necessārius, from necesse; see ked- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
necessary
(ˈnɛsɪsərɪ)adj
1. needed to achieve a certain desired effect or result; required
2. resulting from necessity; inevitable: the necessary consequences of your action.
3. (Logic) logic
a. (of a statement, formula, etc) true under all interpretations or in all possible circumstances
b. (of a proposition) determined to be true by its meaning, so that its denial would be self-contradictory
c. (of a property) essential, so that without it its subject would not be the entity it is
d. (of an inference) always yielding a true conclusion when its premises are true; valid
e. (of a condition) entailed by the truth of some statement or the obtaining of some state of affairs. Compare sufficient2
4. (Philosophy) philosophy (in a nonlogical sense) expressing a law of nature, so that if it is in this sense necessary that all As are B, even although it is not contradictory to conceive of an A which is not B, we are licensed to infer that if something were an A it would have to be B
5. rare compelled, as by necessity or law; not free
n
6. the necessary informal the money required for a particular purpose
7. do the necessary informal to do something that is necessary in a particular situation
[C14: from Latin necessārius indispensable, from necesse unavoidable]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
nec•es•sar•y
(ˈnɛs əˌsɛr i)adj., n., pl. -sar•ies. adj.
1. essential, indispensable, or requisite: a necessary part of the motor.
2. happening or existing by necessity; unavoidable: a necessary change in our plans.
3. acting or proceeding from compulsion or necessity; involuntary.
4. Logic.
n. a. (of a proposition) such that a denial of it involves a self-contradiction.
b. (of an inference or argument) such that its conclusion cannot be false if its supporting premises are true.
c. (of a condition) such that it must exist if a given event is to occur or a given thing is to exist. Compare sufficient (def. 2).
5. something necessary or requisite; necessity.
6. Chiefly New Eng. a privy or toilet.
[1300–50; Middle English < Latin necessārius unavoidable, inevitable, needful]
nec′es•sar`i•ness, n.
syn: necessary, requisite, indispensable, essential indicate something that cannot be done without. necessary refers to something needed for existence, for proper functioning, or for a particular purpose: Food is necessary for life. Sugar is a necessary ingredient in this recipe. requisite refers to something required for a particular purpose or by particular circumstances: She has the requisite qualifications for the job. indispensable means absolutely necessary to achieve a particular purpose or to complete or perfect a unit: He made himself indispensable in the laboratory. essential refers to something that is part of the basic nature or character of a thing and is vital to its existence or functioning: Water is essential to life.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
necessary
1. used with an infinitive
If it is necessary to do a particular thing, that thing must be done.
It is necessary to act fast.
It is necessary to examine the patient carefully.
2. used with 'for'
You can say that it is necessary for someone to do something.
It was necessary for me to keep active and not think about Sally.
It is necessary for management and staff to work together positively.
Be Careful!
If you use necessary in sentences like these, the subject must be it. Don't say, for example, 'She was necessary to make several calls'. Say 'It was necessary for her to make several calls'. However, in conversation and in less formal writing, people normally say 'She had to make several calls'.
See must
If one thing is necessary for another, the second thing can only happen or exist if the first one happens or exists.
Total rest is necessary for the muscle to repair itself.
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012
ThesaurusAntonymsRelated WordsSynonymsLegend:
Switch to new thesaurus
Noun | 1. | necessary - anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained" thing - a separate and self-contained entity desideratum - something desired as a necessity; "the desiderata for a vacation are time and money" must - a necessary or essential thing; "seat belts are an absolute must" |
Adj. | 1. | necessary - absolutely essential obligatory - morally or legally constraining or binding; "attendance is obligatory"; "an obligatory contribution" essential - basic and fundamental; "the essential feature" indispensable - not to be dispensed with; essential; "foods indispensable to good nutrition" unnecessary, unneeded - not necessary |
2. | necessary - unavoidably determined by prior circumstances; "the necessary consequences of one's actions" inevitable - incapable of being avoided or prevented; "the inevitable result" |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
necessary
adjective
1. needed, demanded, required, called for, essential, vital, compulsory, incumbent, mandatory, imperative, indispensable, obligatory, requisite, de rigueur (French), of the essence, needful Is your journey really necessary? Please make all the necessary arrangements.
needed unnecessary, superfluous, expendable, dispensable, nonessential, inessential
needed unnecessary, superfluous, expendable, dispensable, nonessential, inessential
2. inevitable, sure, certain, unavoidable, inescapable Wastage was no doubt a necessary consequence of war.
inevitable avoidable, unnecessary
inevitable avoidable, unnecessary
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
necessary
adjective1. Incapable of being dispensed with:
2. Imposed on one by authority, command, or convention:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
ضَروريضَرُورِيّ
nezbytnýnutný
nødvendig
välttämätön
potreban
szükséges
nauîsynlegur
必要な
필요한
būtinas daiktasbūtinas reikalasneišvengiamaireikalingas
nepieciešams
nutný
nujenpotreben
nödvändig
จำเป็น
gereklilâzım
cần thiết
necessary
[ˈnesɪsərɪ]A. ADJ
1. (= required) → necesario
is that really necessary? → ¿es eso realmente or verdaderamente necesario?
to be necessary to do sth → ser necesario or preciso hacer algo
is it necessary for us to go? → ¿es necesario or preciso que vayamos?
if necessary → si es necesario or preciso
don't do more than is necessary → no hagas más de lo necesario
do whatever (is) necessary to find him → haz todo lo posible para encontrarlo
when/where necessary → cuando/donde sea necesario or preciso
is that really necessary? → ¿es eso realmente or verdaderamente necesario?
to be necessary to do sth → ser necesario or preciso hacer algo
is it necessary for us to go? → ¿es necesario or preciso que vayamos?
if necessary → si es necesario or preciso
don't do more than is necessary → no hagas más de lo necesario
do whatever (is) necessary to find him → haz todo lo posible para encontrarlo
when/where necessary → cuando/donde sea necesario or preciso
B. N
1. (= what is required) the necessary → lo necesario
I'll do the necessary → haré lo que haga falta, haré lo que sea necesario
I'll do the necessary → haré lo que haga falta, haré lo que sea necesario
3. necessaries (= essentials) the necessaries of life → las necesidades básicas (de la vida)
there are shops nearby for all the necessaries → hay tiendas cerca para todo lo necesario
there are shops nearby for all the necessaries → hay tiendas cerca para todo lo necesario
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
necessary
[ˈnɛsəsəri] adj (= required) → nécessaire
Are we teaching students the necessary skills? → Enseignons-nous aux étudiants les compétences nécessaires?
necessary for → nécessaire pour
the colours necessary for perfect camouflage → les couleurs nécessaires pour un parfait camouflage
longer than necessary → plus longtemps que nécessaire
I don't want to stay longer than necessary → Je ne veux pas rester plus longtemps que nécessaire.
it is necessary to do sth (= we must) → il est nécessaire de faire qch
It is necessary to examine this assertion → Il est nécessaire d'examiner cette assertion.
it may be necessary to do this → il faudra peut-être faire ça
It may be necessary to buy a new cooker → Il faudra peut-être acheter une nouvelle cuisinière.
it may be necessary for sb to do this → il faudra peut-être que qn fasse ça
It may be necessary for us to sell the house → Il faudra peut-être que nous vendions la maison.
if necessary → si nécessaire
If necessary, the airship can stay up there for days → Si nécessaire, l'aéronef peut rester en l'air pendant des jours.
when necessary → lorsque c'est nécessaire
The army needs men who are willing to fight, when necessary → L'armée a besoin d'hommes prêts à combattre, lorsque c'est nécessaire.
where necessary → le cas échéant
All the rigging had been examined, and renewed where necessary → Toutes les amarres ont été inspectées et, le cas échéant, remplacées.
Are we teaching students the necessary skills? → Enseignons-nous aux étudiants les compétences nécessaires?
necessary for → nécessaire pour
the colours necessary for perfect camouflage → les couleurs nécessaires pour un parfait camouflage
longer than necessary → plus longtemps que nécessaire
I don't want to stay longer than necessary → Je ne veux pas rester plus longtemps que nécessaire.
it is necessary to do sth (= we must) → il est nécessaire de faire qch
It is necessary to examine this assertion → Il est nécessaire d'examiner cette assertion.
it may be necessary to do this → il faudra peut-être faire ça
It may be necessary to buy a new cooker → Il faudra peut-être acheter une nouvelle cuisinière.
it may be necessary for sb to do this → il faudra peut-être que qn fasse ça
It may be necessary for us to sell the house → Il faudra peut-être que nous vendions la maison.
if necessary → si nécessaire
If necessary, the airship can stay up there for days → Si nécessaire, l'aéronef peut rester en l'air pendant des jours.
when necessary → lorsque c'est nécessaire
The army needs men who are willing to fight, when necessary → L'armée a besoin d'hommes prêts à combattre, lorsque c'est nécessaire.
where necessary → le cas échéant
All the rigging had been examined, and renewed where necessary → Toutes les amarres ont été inspectées et, le cas échéant, remplacées.
[connection, consequence] → nécessaire
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
necessary
adj
→ notwendig, nötig, erforderlich (to, for für); it is necessary to … → man muss …; is it really necessary for me to come too? → muss ich denn wirklich auch kommen?; it’s not necessary for you to come → Sie brauchen nicht zu kommen; it is necessary for him to be there → es ist nötig or notwendig, dass er da ist, er muss da sein; all the necessary qualifications → alle erforderlichen Qualifikationen; necessary condition → Voraussetzung f; (Logic) → notwendige Voraussetzung; to be/become necessary to somebody → jdm unentbehrlich sein/werden; to make it necessary for somebody to do something → es erforderlich machen, dass jd etw tut; if/when necessary → wenn nötig, nötigenfalls; where necessary → wo nötig; you were rude to him, was that necessary? → du warst grob zu ihm, war das denn notwendig or nötig?; that won’t be necessary → das wird nicht nötig sein; to make the necessary arrangements → die erforderlichen or notwendigen Maßnahmen treffen; to do everything necessary, to do whatever is necessary → alles Nötige tun; to do no more than is (strictly) necessary → nicht mehr tun, als unbedingt notwendig or nötig ist; good food is necessary to health → gutes Essen ist für die Gesundheit notwendig
(= unavoidable) conclusion, change, result → unausweichlich; we drew the necessary conclusions → wir haben die entsprechenden Schlüsse daraus gezogen; a necessary evil → ein notwendiges Übel
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
necessary
[ˈnɛsɪs/ərɪ]1. adj (gen) → necessario/a; (result, effect) → inevitabile
a necessary evil → un male necessario
is it necessary to make so much noise? → è proprio necessario or indispensabile far tanto rumore?
it is necessary for you to go or that you go → è necessario che or bisogna che tu vada
don't do more than is necessary → non fare più del necessario
if necessary → se necessario
the necessary qualifications (for) → i requisiti necessari (per)
necessary to health → necessario/a alla salute
a necessary evil → un male necessario
is it necessary to make so much noise? → è proprio necessario or indispensabile far tanto rumore?
it is necessary for you to go or that you go → è necessario che or bisogna che tu vada
don't do more than is necessary → non fare più del necessario
if necessary → se necessario
the necessary qualifications (for) → i requisiti necessari (per)
necessary to health → necessario/a alla salute
2. n (fam) (what is needed) to do the necessary → fare il necessario
the necessary (money) → i quattrini
the necessary (money) → i quattrini
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
necessary
(ˈnesisəri) adjective needed; essential. Is it necessary to sign one's name?; I shall do all that is necessary.
ˌnecesˈsarily (-ˈse-) adverbnecessitate (niˈsesiteit) verb
to make necessary. Re-building the castle would necessitate spending a lot of money.
necessity (niˈsesəti) – plural neˈcessities – noun something needed or essential. Food is one of the necessities of life.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
necessary
→ ضَرُورِيّ nezbytný nødvendig notwendig απαραίτητος necesario välttämätön nécessaire potreban necessario 必要な 필요한 nodig nødvendig konieczny necessário обязательный nödvändig จำเป็น gerekli cần thiết 必要的Multilingual Translator © HarperCollins Publishers 2009
ne·ces·sar·y
n. necesidad;
a. necesario-a, indispensable;
It is ___ → Es necesario;
what is ___ → lo necesario;
whatever is ___ → lo que sea necesario.
English-Spanish Medical Dictionary © Farlex 2012