requisite
[adjective]
Synonyms:
- necessary, called for, essential, indispensable, needed, needful, obligatory, required
[noun]
Synonyms:
- necessity, condition, essential, must, need, prerequisite, requirement

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English Thesaurus: necessary, essential, vital, compulsory, obligatory, ...

[TahlilGaran] English Synonym Dictionary ▲

I. req‧ui‧site¹ /ˈrekwəzət, ˈrekwɪzət/ adjective [only before noun] formal
[Date: 1400-1500; Language: Latin; Origin: past participle of requirere; ⇒ require]
needed for a particular purpose Synonym : necessary, required:
He lacks the requisite qualifications.

[TahlilGaran] Dictionary of Contemporary English ▲

II. requisite² noun [countable usually plural]
formal something that is needed for a particular purpose
requisite of/for
He lacked the moral requisites for marriage.
⇒ prerequisite

[TahlilGaran] Dictionary of Contemporary English ▲

necessary used to describe something that you need to have or do:
Make sure you bring the necessary documents with you.
It may be necessary for you to have a small operation.
essential very important and necessary, especially in order to be healthy, successful etc:
Vitamins are essential for healthy growth.
The tourist industry is an essential part of the Spanish economy.
vital extremely important and necessary, especially in order to avoid serious problems:
A vital piece of equipment on the spacecraft had stopped operating.
It is vital that the aid is sent immediately.
compulsory if something is compulsory, you must do it because of a rule or law:
Maths and Science are compulsory subjects.
All new staff undergo a compulsory training course.
obligatory if something is obligatory, you must do it because of a rule or law. Obligatory is more formal than compulsory:
The use of seatbelts is obligatory.
Safety regulations have made it obligatory for all competitors to wear fist protectors.
mandatory if something is mandatory, you must do it because it is the law. Mandatory is more formal than compulsory and sounds stronger:
School attendance is mandatory.
a prisoner serving a mandatory life sentence
requisite /ˈrekwəzət, ˈrekwɪzət/ formal [usually before noun] the requisite things are the ones that you need to have in order to do something:
The other candidates lacked the requisite skills.
the requisite evidence needed for a successful prosecution

[TahlilGaran] English Thesaurus ▲