necessity, essential, requirement, requisite, 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")
Overview of adj requisite
The adj requisite has 1 sense
needed, needful, required, requisite -- (necessary for relief or supply; "provided them with all things needful")
(Sound)
